Mortal Sin

Released: Aug 29, 2025
Platforms
Last updated: 16 Sep 2026, 01:09 GMT

Updates & announcements

20 posts

25 Jun 2026Developer post
5 New Languages, 8 New Unique Items
Hello Sinners! A lot of you asked to play Mortal Sin in your own language, so this update is a big step toward that. Five new languages, eight new unique items, and a stack of bug fixes. Here's everything: 🌍 New Languages Added German, Japanese, Korean, Polish, and Brazilian Por
Hello Sinners!
A lot of you asked to play Mortal Sin in your own language, so this update is a big step toward that. Five new languages, eight new unique items, and a stack of bug fixes. Here's everything:
🌍 New Languages
Added German, Japanese, Korean, Polish, and Brazilian Portuguese! A handful of passionate players came through and delivered these, and I honestly can't thank them enough. They're still being polished, so if something reads off in your language, let me know and I'll get it sorted.
✨ New Unique Items
Filled out the unique pool so every armor slot has more to roll:
Penitent's Bulwark (Armor): huge max HP, but you deal less damage.
Spiteguard (Armor): taking damage fires your projectile weapons back at the attacker.
Gambler's Grip (Gauntlets): big luck boost at the cost of max HP.
Carnage Grips (Gauntlets): kills have a chance to overwhelm you with power, boosting all damage.
Surge Striders (Boots): critical hits restore mana across ALL your gear and weapons (short cooldown).
Warpath Greaves (Boots): big speed boost, reduced defense.
Reaper's Crown (Helmet): every kill restores some ability cooldown.
Predator's Visor (Helmet): your first hit on an undamaged enemy hits way harder.
⚖️ Balance & Availability
Divino's Decree (Finger of Death) no longer drops for Hoarder. He can't thrust, so it did nothing for him.
Struggler skin unlock: invincibility requirement lowered from 12s to 5s, with a grace period so you can chain it more reliably.
🐛 Bug Fixes
Timer no longer wraps or breaks after 24 hours (game over and progress screens).
Enemies no longer fire projectiles while stunned or dead (fixes Knight Lord launching invisible Waveblades during its death animation).
Enemy Elite Soul Lance projectiles no longer shoot through walls (most of the time).
Immortal Construct grab no longer locks you up if it despawns while grabbing you.
Various localized text fixes, including typos and some stat values that weren't displaying correctly in certain languages.
That's it for this round. More fixes and polish on the way, and if there's something you'd like to see next, drop a comment. I read everything. 👁
Mortal Sin is also on sale right now for the Steam Summer Sale at 32% off, its biggest discount since launch. If you've enjoyed it, telling a friend or gifting a copy genuinely helps a solo dev keep these updates (and the next game) coming.
Thanks for playing.
-Nikola
Original post
21 May 2026PCGamesN
Mortal Sin is my favorite roguelite you haven't played, and it's a steal in this Steam key bundle
Grab a copy of Dark Messiah or Warhammer: Vermintide, then sprinkle some Roboquest and a dash of Hades, and you'll get Mortal Sin. At first, the almost grotesque layer of paint over the retro-style visuals looks unappealing, but as you get used to it, this indie soon cements itse
15 May 2026Developer post
Mortal Sin Is 25% Off + What’s Next
Hi everyone! I wanted to share a quick update on what I’ve been working on, what’s next for Mortal Sin, and what’s coming later with my next game. For full transparency, since the last major update, I’ve spent most of my time working on my new project. I’ve taken a lot of what I
19 Mar 2026Developer post
Blitz Ascension
Blitz is here. This is something I’ve wanted to do for a while, a mode that strips Mortal Sin down to its core and pushes it as far as it can go. Faster runs, higher pressure, more meaningful decisions, and a real reason to compete. Every run is a fresh start. Every day is a shar
Blitz is here.
This is something I’ve wanted to do for a while, a mode that strips Mortal Sin down to its core and pushes it as far as it can go. Faster runs, higher pressure, more meaningful decisions, and a real reason to compete.
Every run is a fresh start. Every day is a shared challenge. And every second matters.
Alongside Blitz, I’ve added a new boss, new enemies, new elite modifiers, and a number of balance changes to tighten things up across the board.
New Mode: Blitz
Blitz is a roguelike within a roguelike. It focuses entirely on skill and efficiency.
Your curse meter increases over time instead of based on progress, so you cannot take your time. Every decision has weight.
There are no floor plates. Instead, you will fight through a series of arena battles and trap gauntlets to get as far as possible.
Your score is submitted to a global leaderboard that resets weekly.
Each day, you are given a fixed seed set of 3 sin remnants. Everyone gets the same ones. The challenge is figuring out the best class and build for that day.
To help you get going, each run has a high chance to drop a powerful unique item early, letting you shape your build right from the start.
Blitz takes the combat and skill expression of Mortal Sin and packs it into short, high intensity runs with strong replayability.
New Content
Knight Lord (Boss)
A hulking mountain of steel with one goal: ruin your day.
He can fire magical swords, summon other knights, and overwhelm you up close. He is the only enemy in the game that cannot be dismembered, making him dangerous from start to finish.
Found in Trial of Resolves, and can also appear in Blitz and randomized enemy sets.
Monk Knight (Enemy)
A hooded knight who abandons weapons entirely and relies on brutal barehanded combos.
Fast, aggressive, and relentless. Common in Blitz and randomized enemy sets.
New Elite Enemy Attributes (7 total)
Increased Melee Damage
Increased Speed
Explode on Death
Explode on Hit
Throw Bombs
Fire Soul Lance
Corrosive Aura (drains equipment durability)
Blitz Additions
Dual Curse Rooms. Choose between two curses to proceed
Crafting Rooms. Roll up to 3 item sets to help build your run
Trap Corridors. Blast through these as fast as you can. The real danger is the traps waiting around each corner ready to end your run
5 new music tracks. Blitz now uses action music only to keep the tempo high
Balance Changes
Invincibility Rework
Invincibility has been toned down across the board.
Previously, it was too easy to chain invincibility from combos, abilities, and potions, which trivialized large parts of the game and pushed players into a single dominant playstyle.
Now, new sources of invincibility no longer automatically refresh your current invincibility. You can still overlap them, but you need to time it properly instead of spamming.
The goal is to keep invincibility as a strong tool, but make it skill based instead of something that removes risk entirely. It also brings defensive playstyles like parrying and itemization back into relevance.
Skill and System Changes
Rerolling skills now doubles in cost each time
Synaptic Freeze costs more mana and now has a short cooldown
Singularity now has a cooldown
Blood Magic now grants increased damage based on missing health for a stronger risk reward playstyle
Ghost Skin now scales with 80% of luck instead of 100%
Resource Changes
Magic and Vital essence now have a 5 second spawn cooldown This prevents instantly refilling potions from large enemy packs and makes resource management more meaningful
Enemy Adjustments
Enimatik health reduced by 20%
Fixes and Improvements
Fixed UI bug where selecting a class would scroll back to the top
Fixed Immortal Construct not appearing in the Vessel area
Fixed progress screen showing incorrect wiped data instead of actual run stats
Updated app icon to better match the realistic visual style
Upgraded Unity version, improving performance, reducing RAM usage, and significantly reducing build size
Closing
This is a big shift for the game.
Blitz is designed to reward mastery, experimentation, and efficiency in a way the base mode doesn’t. I’m really curious to see what builds people come up with each day and how the leaderboard evolves.
As always, I’ll be watching feedback closely and making adjustments where needed.
Good luck. You’re going to need it.
Original post
23 Feb 2026Developer post
300,000 Copies and What Comes Next
Hello Sinners! Those of you who are used to my usual feverish pace of updates might be wondering how things are going, so I want to be honest and transparent about the current state of Mortal Sin and what the future looks like. First of all, I’m excited to share a huge milestone.
22 Dec 2025Developer post
Steam Winter Sale: Grab Mortal Sin at 20% off!
🔥 Sinners! Friendly reminder that Santa is arriving earlier than expected, with a 20% sale through Steam's Winter Sale event. The offer will last till the 5th of January 2026 @ 10 AM PT. Let the snow fall, the blood flow and I hope that playing through my little special project
18 Dec 2025Developer post
Final Boss Flow Update
Hello Sinners! I have been cooking up some new content and features, but they need a bit more time in the oven. In the meantime, I wanted to ship these quality of life improvements to make the overall experience smoother and more enjoyable. Quick reminder that Mortal Sin will be
24 Nov 2025Developer post
🧡 Nominate Mortal Sin for "Best Game You Suck At" Award!
Hey, guys! The Steam Awards 2025 has just started, and it's definitely one of the best moments to allow the community to give Mortal Sin a chance to receive the support and votes for it. Mortal Sin is a blast for me to work on, and the fact that I was able to push the launch of t
27 Oct 2025Developer post
Remnants of Sin Update
This update is mainly about two things: making runs feel more worth chaining, and pushing performance further. The new Sin Remnants system lets you pick one of three on death or when continuing to the next run, and some of them can completely flip how your next round plays. The i
This update is mainly about two things: making runs feel more worth chaining, and pushing performance further. The new Sin Remnants system lets you pick one of three on death or when continuing to the next run, and some of them can completely flip how your next round plays. The idea is to make the next run feel tempting instead of starting over from zero.
On the performance side I hit a lot of the obvious wins across blood, projectiles, foliage, hit detection and lighting. I still want to bring RAM down more and I am still not happy with Steam Deck performance yet, so that remains a priority going forward.
New Feature — Sin Remnants
New system that appears only on death or when continuing to the next round
These twist the next run in a strong way and push runs toward distinct paths
Added 40 Sin Remnants
Performance and Optimization
Upgraded Unity version to fix a security vulnerability
Optimized hit detection performance
Optimized blood effects with pooling
Optimized projectiles with pooling
Optimized lighting performance in various rooms
Optimized foliage in the forest area for a large performance gain
Optimized various systems to avoid allocations when not necessary
Gameplay and Systems
Essence now moves to the center of the screen before routing to the UI so its source and destination are more clear
Fixed a bug where you could run back through the Trial of Resolve start gate before it closed and get stuck
UI / UX
Polished the death screen UI
Added a loading indicator for first time level entrance loads when starting the game
Fixed an issue where the main menu saved session selector could not be navigated with a controller
Audio
Lowered crit and gunshot SFX volume slightly
Sin Remnant List (40)
Defensive leaning
Anchor — Reduced damage and combo timer is paused while standing still
Crush — Parry makes your next slow power strike very strong
Deprived — More damage while you have no health potions
Dryfire — Gain speed while you have no wizard oils
Frostskin — Taking damage can freeze the attacker
Reckless — More damage with reduced invincibility duration
Shatter — More damage to frozen targets
Offensive leaning
Ascended — All normal enemies are elites and elites can drop skill chests
Bloodlust — Speed scales with missing health
Brood — Standing still fires a slow skull
Commit — Block becomes a slow power strike that deals increased damage
Cruciform — Each combo level summons a rotating cross
Doomroll — All attacks critically strike but you cannot become invincible
Dropkick — Knockback kills cause explosions that scale with kick damage and knockback strength
Execution — More damage to bosses and elites
Focus — More damage when firing a single projectile at a time
Graviton — Charging pulls enemies and grants damage per nearby enemy
Haunt — Each combo level summons a piercing spirit
Hexrush — Gain speed for each unpurged curse
Imbibe — Health potion causes a fiery explosion and oils freeze nearby enemies
Jackpot — Next drop is guaranteed unique and rare chance is increased
Jolt — Critical strikes shock nearby enemies and scale with hit damage
Lunge — Crouch attacks always thrust and deal increased damage
Primed — Standing still fires a delayed blast once per combo level
Resonance — Consuming gold stuns and damages, consuming vital explodes, consuming magic freezes nearby
Retort — Parrying fires an energy beam
Rhythm — Attack speed scales with combo level
Ricochet — Hitting surfaces spawns a delayed blast at the impact point
Rollback — Each combo level can reset your ability cooldown
Skyfury — Kick jump anywhere (at reduced height) and deal more airborne damage
Tempo — Damage scales with combo level
Trailblaze — Running fires a fireball
Trigger — Healing makes your next attack a whirlwind
Wick — Dashing summons a fiery wisp
Impulse — Every critical strike reduces your ability cooldown
Run economy and carryover
Carryover — Retain some passive skills in the next run
Greed — Start with extra gold essence and gain more gold
Rush — Speed boost in the first area
Stacked — Carry one skill into the next run with high stacks
Windfall — Selling items causes a large explosion and enemies can drop loot crates
Thanks again to everyone still playing and supporting the game. If you enjoy the updates, a review genuinely helps more than anything right now. The Overwhelmingly Positive rating stays on a razor edge and every big sale wave brings some snap negative low playtime reviews, but the core players always manage to pull it back and I really appreciate that.
Let me know what you would most like to see next. I try to read everything.
👁
Original post
21 Oct 2025Developer post
🎃 Halloween Sale (October 21st - November 3rd)
The spoooooky season is already here, and the Trial of Halloween knocks for some mortal tricks or treats. This time, it chooses treats, with a 20% discount , no strings attached. From 📅 October 21 to November 3 , there is never not a good time to slash your way through the malev
03 Oct 2025Developer post
🍂 Steam Autumn Sale: Grab Mortal Sin at 20% off!
Hey, Sinners! In case you have missed the information from the previous announcement, the official Steam Autumn Sale is here and not without a piece of Mortal Sin. With a 20% discount until 📅 October 6, 2025 , this is one of the best times to experience the fast-paced roguelike
29 Sep 2025Developer post
Skins of Sin Update
For this update I wanted to make the classes feel more distinct while also expanding the game’s meta progression. To do that, I’ve added a set of skill-based unlockable objectives that challenge you to play in specific ways. These objectives reward you with unique class skins, gi
For this update I wanted to make the classes feel more distinct while also expanding the game’s meta progression. To do that, I’ve added a set of skill-based unlockable objectives that challenge you to play in specific ways. These objectives reward you with unique class skins, giving both a new visual identity and another layer of long-term goals to chase.
New Content
Added unique class skins with 3 variants per character (48 total).
Skins are unlocked by completing special objectives such as defeating multiple enemies in a single attack, finishing areas under time limits, or acquiring specific skills and items.
Every class still has its classic default skin available.
Unique arms and legs are now visible in first-person, and you can preview the full model in the skin selector UI.
The skin selector is available for both new games and saved sessions.
Added damage and death sounds for female skin variants.
Gameplay Changes
Removed the cooldown reset from Hoarder’s Liquidate combo (basic whirlwind attack).
Reduced the hitflash intensity on Wall Hand and Wall Face enemies.
Starting weapons for each class now display a tooltip on the class select screen.
Quality of Life
On first boot, players now see the character selection screen instead of being dropped straight into gameplay.
While only the Berserker is available at the start, this gives players a clear preview of class progression.
Helena’s “Breaking the Cycle” dialogue is now color-coded to stand out more clearly. She does in fact explain how to reach Enimatik there.
UI Improvements and Fixes
Fixed tooltips that remained on screen after deselection. They now disappear correctly.
Fixed the Enimatik clear badge being visible off-screen while scrolling.
Fixed a bug where forest rooms with Fractured Oath lost door collision when entering Vessel.
Achievements and Progression
Path of Torment now also rewards achievements from lower difficulties.
Note: This is not retroactive.
Boss and Encounter Adjustments
Enimatik fight improvements:
Falling off grants 1 second of invincibility to prevent unfair follow-up hits and saw blade damage.
Enimatik’s hands no longer push the player during movement animations.
Outer platforms are now static for easier positioning.
Middle platforms reduced in size to prevent clipping through the edges of outer platforms.
This update is about giving every class more personality and rewarding players who push their skills in new ways. The new skins are both a visual prize and a symbol of achievement, while the balance and quality-of-life changes should make the overall experience smoother and more satisfying.
If you’ve been enjoying Mortal Sin, I would be incredibly grateful if you left a review on Steam. The game is on a razor’s edge of keeping its overwhelmingly positive rating, and every supportive review makes a real difference. Some players come in with mismatched expectations and leave quick negative reviews without giving the game a fair chance. What truly helps the game thrive is the support of those who see what it’s aiming for and appreciate it for what it is.
Your encouragement and feedback are what keep me motivated to keep building, fixing, and expanding. Thank you for being part of this journey with me.
By the way, Mortal Sin is currently 20% off for the Steam Autumn Sale, so if you have been on the fence, now is a great time to jump in and experience the new content, or even gift it to a friend.
Original post
01 Sep 2025PCGamesN
Brutal 95% rated dungeon crawler Mortal Sin finally hits 1.0 on Steam
I'm a sucker for a game with a unique style and interesting art direction. I don't care if it's an MMO I've never played before or a deckbuilding FPS life sim. If it looks good, I'm in. Mortal Sin drew my attention during its early access period because it did just that. It esche
01 Sep 2025Developer post
Hotfixes 8/31
Hello Sinners, Thank you so much for the incredible support during launch. Mortal Sin has been trending on Steam and the response has been amazing to see. I’m truly grateful for all of you who picked up the game, shared it, and gave it a shot. Here’s what’s in today’s update: Fix
Hello Sinners,
Thank you so much for the incredible support during launch. Mortal Sin has been trending on Steam and the response has been amazing to see. I’m truly grateful for all of you who picked up the game, shared it, and gave it a shot.
Here’s what’s in today’s update:

Fixed the Hunter’s Eviscerate combo to work with non-spear weapons such as the Halberd and Guan Dao.
Removed large mushrooms in one of the cave rooms that could box players in. Technically you could crouch to get out, but since crouch is rarely used (and some of you might only be learning it exists reading this), I’ve adjusted the room accordingly.
Fixed a soft lock in the combat tutorial if you pressed back on gamepad before opening the combo menu.
Fixed a bug where completing the game on Easy would not count towards unlocking the Enigma class.
Completing a run will now show “Next Round” instead of “New Game” on the button.
Fixed some translation issues, including Spanish not showing the death screen results correctly.
While most of the feedback is positive, as the game reaches a wider audience beyond those who usually enjoy roguelikes or hack and slash games, there has also been a flood of negative reviews from players with low playtime (often 15 minutes or less). If you are enjoying Mortal Sin, I would greatly appreciate it if you left a review. It makes a real difference for the game’s continued success and helps your voice be heard.
Also, if you run into any bugs or issues, please consider stopping by the Discord and leaving as many details as possible. Screenshots, videos, and especially your player log file are a huge help in tracking down and fixing problems quickly.
Thanks again, and keep on sinning!
Original post
29 Aug 2025Developer post
Mortal Sin – Version 1.0 Release
It’s finally here. After years of work, countless overhauls, and a lot of support from all of you, Mortal Sin is leaving Early Access and hitting full release. This update isn’t just a collection of tweaks, it is the culmination of everything I’ve learned from development and fro
It’s finally here. After years of work, countless overhauls, and a lot of support from all of you, Mortal Sin is leaving Early Access and hitting full release.
This update isn’t just a collection of tweaks, it is the culmination of everything I’ve learned from development and from all the feedback you’ve given me. If you’ve been here since the beginning, I can’t thank you enough. If you’re new, welcome. This is the best version of Mortal Sin yet.
New Content
New Languages
Full Spanish (Spain) translation
Full French translation
Calistra’s Portal Room
Added a rare new portal encounter with Calistra, the witch from the questline.
She has her own lore and dialogue, and you can trade sin tokens with her for powerful unique items if you are lucky enough to find her.
Helena Expanded
Completely redid all of Helena’s dialogue to flesh out her story. If you have played before, I highly recommend rereading it. It reframes the whole narrative and sets up the ending.
Helena now appears in multiple places throughout the world (like the Maw of Sin) with unique animations and situational dialogue.
The True Final Boss
A brand new final boss sequence: Enimatik.
This is the first and last true boss of the game, complete with phases, patterns, a full health bar, and multiple true endings to unlock.
Combat and Gameplay Overhauls
Massive Animation Rework
Every player animation in the game has been redone (again). This meant literally hundreds of new animations.
The goal was to make combat more snappy and weighty. I think the game finally captures the “melee Doom” feel I have been chasing since the start.
Weapon Overhaul
Many weapons now have new or reworked attacks to make them feel distinct.
Examples:
Scythe thrust now throws it like a boomerang.
Hammer thrust now does an upward slam.
Hitstop Adjustments
Light attacks no longer trigger hitstop by default (heavy attacks still do). This makes pacing smoother while keeping hitstop special and satisfying.
Added a new Full Hitstop setting for players who prefer the old style.
You can now cancel long hitstops by performing another action.
Combat Flow Changes
Heavy attack hold time reduced from 0.5s to 0.25s, making them faster and less likely to trigger accidental whirlwinds.
Auto-combo turned off by default since it confused more players than it helped.
Improved hit detection across the board for more reliable combat.
Class and Balance Updates
Berserker Rage invincibility duration nerfed.
Blood Magic now consumes less health.
Path of Grace now gives the same achievements as Path of Absolution.
Adjusted class unlock order to be more appealing for new players: Berserker → Reaper → Paladin → Mage → Monk.
Divino’s combo tutorial expanded with nearly all class combos.
Systems and Features
Resolution Scale Slider
New performance option for easy framerate gains without messing with other settings.
Camera Motion
Added head bob while walking and running, plus subtle motion during every attack to give combat more weight.
Can be toggled off in settings.
Visuals and Audio
Polished blood animations to be faster and more consistent.
Huge pass on VFX: class abilities, weapon trails, and more now feel more polished and impactful.
Big audio pass with improved and replaced sounds across the game.
Fixed fracture projectiles from stacking ear-shattering volumes (they now only trigger once).
Bug Fixes
Fixed thorns bug where damage was being multiplied too much.
Fixed scaling issue with enemy projectile damage.
Fixed a bug where dead enemies left behind invisible colliders.
Fixed Maw of Sin final boss arena so he does not run up the mountain anymore.
Reduced input buffer minimums to stop attacks from being dropped.
Closing
This update is the biggest I have ever done for Mortal Sin. It is not just an update, it is the game I always wanted it to be.
I hope you enjoy diving back in, discovering Helena’s new story, taking on Enimatik, and carving your own path through the world of sin.
Thank you for playing, for supporting me through Early Access, and for helping me shape this game into what it is today. This is just the beginning.
See you in the Maw.
— Nikola
Original post
22 Aug 2025Developer post
Arise, Sinners - Mortal Sin Full Launch coming August 29th, 2025!
⚔️ Arise, Sinners. The time is nigh. Mortal Sin, the chaotic and blood-soaked roguelike that pits you against waves of enemies in an unforgiving gothic novel-inspired world, has now received a confirmation for its official release date. I'm super happy to announce that the game i
01 Aug 2025Developer post
Keeping Up The Momentum
Hey everyone, while I’m working on some bigger content, I wanted to keep the momentum going with a gameplay-focused polish update. This patch is all about improving hit feedback, cleaning up visual effects, and fixing some long-standing collision annoyances. Enjoy the smoother ex
Hey everyone, while I’m working on some bigger content, I wanted to keep the momentum going with a gameplay-focused polish update. This patch is all about improving hit feedback, cleaning up visual effects, and fixing some long-standing collision annoyances. Enjoy the smoother experience!
Bug Fixes:
Fixed a bug where upgrading unique items didn’t work correctly.
Fixed a bug where you could clip through the wall in one of the cave boss rooms.
Fixed a timestop bug where enemies would stay frozen after the effect ended until hit.
Fixed a bug where Gift of Might was still granting skill stacks when it shouldn’t.
Combat & Feedback Improvements:
Hitflash effects on Realistic Mode are now a strong white, making hits stand out more.
Hitflash now also plays on severed limbs for better dismemberment feedback.
Added wall hit effects, sound, and screen shake. Metal weapons create sparks on impact.
Bloody Palm now drains health per projectile, preventing infinite healing with Echo or Fracture. Added a brief damage cooldown to prevent excessive burst damage.
Greatly smoothed screen shake animations to remove jittering. This allowed for longer, more noticeable shake effects for better impact feel.
Visual & Environmental Polish:
Smoothed cave floor and collision to reduce getting stuck or popping upwards. Removed collision from small ground debris like rocks and bricks.
Improved Shockwave effect visuals (used in Quake, Block, Combos, etc).
Improved Explode on Hit effect visuals (used in Abilities, Combos, Parries, etc).
Original post
25 Jul 2025Developer post
Unique Items, Loot Overhaul, Accessibility Update
Hey everyone, Before we dive into the full patch notes, I wanted to make a quick request: I’m looking for a Spanish (Spain) localizer , ideally someone who actively plays the game like our Russian and Chinese translators. If that sounds like you, or you know someone who might be
Hey everyone,
Before we dive into the full patch notes, I wanted to make a quick request: I’m looking for a Spanish (Spain) localizer, ideally someone who actively plays the game like our Russian and Chinese translators. If that sounds like you, or you know someone who might be a good fit, please reach out.
This update is focused on improving early and mid-game retention. I’ve been looking closely at the data, and far too many players are dropping off early. As much as I’d love to spend all my time adding new challenging content for hardcore players, over 90% of people never even reach that point. I want more players to actually experience the content I’ve worked so hard on.
That said, I still plan to add a super challenging true ending fight that completes the story, along with a leaderboard-based challenge mode. But first, I want to make sure more people are getting far enough to see everything the game already has to offer.
🛡️ 12 New Unique Items
The biggest addition in this update is a full set of 12 all-new ultra-rare unique items. These are designed to feel wild, overpowered, and synergistic with other stats and skills. They’re not just stronger — they break rules, open up fresh builds, and add rare moments of power that can completely reshape your run.
You’ll have a better chance of finding them by stacking Luck, or by visiting crafting anvils and completing rare armor quest rewards. Right now these are all armor, boots, helmets, and gloves, but I plan to add more unique weapons later. The only current one is Helena’s Divine Retribution.
There’s already plenty of randomness in the game that exists to challenge you — enemies, traps, curses, scares — but not a lot that surprises you in a good way. I want to change that. Let me know what kinds of uniques you’d like to see in future updates.
⛑️ Helmets
Neuroshard Helmet – Synaptic Freeze: Freezes time while you are invincible. Invincibility duration scales with your speed.
Calistra’s Embrace – Singularity: Every combo level summons a black hole. It pulls in enemies and detonates after a short delay.
Enimatik’s Eclipse – Sinburst: Using your ability triggers a delayed explosive blast.
👢 Boots
Phantom Treads – Ghost Skin: You have a chance to evade damage based on your luck.
Infernal Treads – Ember Wake: Greatly increases movement speed while charging attacks. Charging summons fiery wisps that damage nearby enemies. You cannot be stunned.
Spectral March – Soul Conduit: Kicking an enemy summons void blades and casts all of your spells. Can only trigger once per combo level.
🧤 Gloves
Crystal Fang – Glass Reaver: Greatly increases all damage dealt. Reduces your maximum health.
Divino’s Decree – Finger of Death: Thrusting attacks fire death beams. Death beam damage scales with your thrust damage.
Teraminkla’s Grasp – Hellwheel: Power Strike Whirlwinds trigger bursts of flame. Flame damage scales with your Whirlwind damage.
🛡️ Chest Armor
Stormplate – Arc Lash: When you block an attack, release a shock blast. Its damage scales with your defense.
Bloodhide – Blood Magic: Skills consume health instead of mana, at a greatly reduced cost. Greatly increases your maximum health.
Sparkcoil – Static Discharge: Bashing an enemy unleashes a shock blast. Shock blast damage scales with your Bash damage. Can only trigger once per combo level.
⚙️ General Improvements and Bug Fixes
Fixed issue where quests were being regenerated every time you entered the game, even during a session already in progress.
Added a highlight to the item inspect hotkey since a lot of people were missing it.
Quest objective UI bounce animation now only shows for quests you can still visit in the current run.
Fixed a bug where the cannon skeleton's kick parry warning would stay on screen after the animation ended.
Slightly reduced damage on sword skeleton (dual-wielding enemy).
Fixed a softlock caused by getting grabbed by the Pursuer while he was despawned.
Added generic weapon descriptions for all weapons. Also added equipment descriptions to commonly asked-about armors like Caestus, Claws, and Guillotines.
Skills that require armor or weapon slots now show red text if you don’t have the slot, and green if you do.
Falling in levels is no longer an instant kill. You’ll now be teleported back to the level, but lose one piece of equipment, 10 percent essence, and 25 percent health. This applies to places like the Cave and the infamous Maw of Sin spike pit or blood ocean. While I have to admit I got some good laughs watching people fall into the spike pit, it’s just not polished game design, especially for a roguelike. This change keeps the punishment but avoids the cheap frustration.
🧠 Item and Stat System Changes
Implicit stats were accidentally removed last update. I’ve decided to leave them out permanently, but the amount they used to give is now added directly on top of whatever stat the item rolls.
Gift of Might no longer raises stat caps. Increased the defense percentage hard cap from 75 percent to 80 percent.
Gift of Insight now grants stats equal to 50 percent of the normal value. It still gives bonus skill stacks.
Major item rework: Items now roll at most one stat and one skill, but both are greatly increased — sometimes 4 times higher than before. This change serves two big goals:
Speed up item comparisons, so you can tell quickly whether something is worth using.
Make items feel more impactful, so a single pickup can meaningfully shift your build. Now when you find something with Speed or Attack, it might give +40 percent instead of the old +5 percent. A single Health or Defense item can now make the difference between being squishy or tanky.
To further differentiate equipment types:
Armors now roll stats.
Weapons do not roll stats, but have increased skill stacks.
You can still get stats on weapons by upgrading them or using Gift of Might.
Luck formula for item rarity now uses diminishing returns. It still helps a lot with finding unique items, but it no longer guarantees the best drops every time.
Doubled the duration of Sin Ward.
Fixed a bug where unarmed thrusts didn’t count as thrusts for skill purposes.
💥 Difficulty and Progression
Added Easy Mode: Path of Grace Reduces enemy speed, health, and damage. Also reduces scare speed. Grants one free cheat death per run. This mode is mostly intended for new players who want to learn the game, but it’s also great for experienced players who want to try out new builds or have a more relaxed run. I’ve noticed that the difficulty of the game often pressures people into sticking with one strategy. Hopefully this gives you room to experiment without losing progress. This mode does not grant achievements except for class completions.
Fixed bug where Path of Torment didn’t grant class completion achievements.
Class completion achievements now unlock retroactively when you boot up the game.
Save data is now unified across all difficulties, so you no longer need to unlock things again when switching modes.
Path of Torment is now unlocked from the start.
🧙 Class Changes
Hoarder can now use armor but not weapons. No longer scales with gold essence. I’m trying to emphasize build diversity, and Hoarder was too much of an outlier. He’s now stronger than ever and can use many skills he previously couldn’t.
Thank you again to everyone who left a review.
Last week I asked for help because of an influx of low-effort reviews. You came through in a big way, raising the recent average from 87 percent to 94 percent. That’s huge and I appreciate it more than I can say.
That said, the Overwhelmingly Positive overall score is still on a razor’s edge. If you’ve been enjoying the game and haven’t left a review yet, now is the time. It really helps.
My next focus is to flesh out replayable content, complete the lore and final area, and add the true final boss fight, which will unlock after you complete a run with 3 Oaths and have Divine Retribution. That’s meant to be the ultimate challenge for the most hardcore players.
In the meantime, I’d love your thoughts:
What kinds of things would keep you chaining runs back to back?
Let me know.
Thanks for playing,
Nikola
Original post
18 Jul 2025Developer post
Major Class Overhaul + New Combos Update
It’s time for another hefty update! This one brings major class revamps, new combos, UI upgrades, performance boosts, and some long-requested quality-of-life changes. Whether you're a seasoned brawler or just jumping in, there's plenty to explore. And smash. 🔥 Class Overhauls &a
It’s time for another hefty update! This one brings major class revamps, new combos, UI upgrades, performance boosts, and some long-requested quality-of-life changes. Whether you're a seasoned brawler or just jumping in, there's plenty to explore. And smash.
🔥 Class Overhauls & Balance
Pirate Revamp: Complete overhaul! Pirate now has all-new combos and attacks significantly faster. Features two unique ability combos—one resets your cooldown, the other ends in a powerful explosion finisher.
Vampire Revamp: Faster attacks and new staff-focused combos to better handle late-game threats. The weapon swap combo (staff to fists) has been streamlined and powered up. Bloodthirst no longer requires an equipment slot.
Hoarder Revamp: Now has powerful on-demand combos instead of relying solely on charge attacks. His charge is still deadly, and his whirlwind gains bonus properties. Hoarder essence loss is now capped at 15% per hit.
Mage Buffs: Added a new combo, Evocation—a long manual chain that resets ability cooldown and grants the Power Overwhelming buff. Also improved Arcane Rush to trigger a fast whirlwind and shock blast.
Duelist Buff: Added a new manual combo: Encore. Resets your ability cooldown when executed.
💥 Combat & Combo Enhancements
Dragon Punch and Fist Overhead Slow Strike hitboxes extended for better consistency.
Auto Combo Targeting: If a combo is visible on-screen, auto combo will now prioritize it.
Shuffle Combos: Now shows combos involving fists, staves, or melee weapons if they’re in your inventory—even if not equipped. Helps weapon-swapping classes like Vampire, Struggler, and Monk.
Cooldown Reset Combo Fix: Fixed a bug where Resets Ability Cooldown Every X Seconds combos triggered their internal cooldown even if your ability wasn't actually on cooldown.
Cooldown Reset Rework: These combos now scale their reset timer based on your ability's cooldown instead of a flat 10 seconds.
New Oath – Sanguine Flow: Converts cooldown reset combos to drain health instead of using a timer. Great for aggressive builds that can sustain through lifesteal.
🧨 Visual & Feedback Improvements
Bombs now cause screen shake based on explosion proximity.
Blood Ritual explosion now triggers a light screen shake.
Rare skills like Indomitable Spirit, Judgement, Unyielding Faith, and Transcendence now glow for added flair.
You can no longer be guard broken while parrying. Instead, your guard meter is reduced to 1.
Bloody Palm can no longer kill you via health drain. Health drain reduced from 5% → 3.5%.
🛠️ Performance & UI Updates
Shaders now stay loaded to help reduce hitches.
Minor camera performance improvements.
Revamped item comparison UI: now merges panels and shows global stat/skill changes, making upgrades easier to judge. Hold ALT to inspect without comparison view.
Main popup UI now expands horizontally to prevent excessive vertical stacking.
📈 Stats, Systems & Progression
Stats now have soft and hard caps (e.g., Attack up to 400%, Speed up to 100%). The soft cap is where scaling slows; hard caps are nearly unreachable but offer added ceiling for extreme builds.
Renamed “Slash” input to “Melee Weapon Attack” for clarity.
Swapped Pirate and Mage on the class unlock order since Pirate’s now a top-tier pick.
Regenerator skill now restores health faster.
Drop chests will now spawn yellow essence if no loot is inside (fixes issue for Hoarder).
Added new uncommon Hoarder skills for more build diversity.
🏆 Achievements & Progress Tracking
Removed Path 5, 10, 15, and 20 achievements. While a few players achieved them, they were generally seen as unrewarding and unnecessary. I’d rather keep endless modes as a fun extra, not something the game is balanced around.
Added 16 new class completion achievements—beat the game with each class on either Path of Absolution or Path of Torment.
🎃 Miscellaneous Tweaks
Reduced Feast of Fright oath scare rate from 100% → 35%.
Thanks again for all your support as we close in on the 1.0 launch. Every bit of feedback helps shape the game into something stronger, faster, and bloodier. Try out the new class kits, experiment with the updated combos, and let me know what you think!
In case you haven’t noticed already, the price of Mortal Sin has increased from $20 to $25 in preparation for launch (announcement coming soon). As I mentioned in a previous post, the discount schedule has also reset and won’t return for quite some time. I’m sure most active players understand the reasoning, but for anyone unfamiliar: I’ve essentially rebuilt the game from the ground up over the past two years and massively expanded the content.
If Mortal Sin had launched at 1.0 today, you could say I’ve already delivered the equivalent of a full remake and multiple DLCs. From AI and level design to combat flow, player animations, UI, and visuals—nearly every core system has been reworked to create the best possible experience. I believe the new price fairly reflects the value that’s been added since Early Access.
Also, if you’ve enjoyed the game, please consider leaving a review. Mortal Sin is at risk of losing its “Overwhelmingly Positive” rating, largely due to a recent wave of sub-30-minute reviews lacking meaningful feedback. Ratings aren’t everything, but for a still relatively underground indie game, they make a huge difference.
—Nikola
Solo developer of Mortal Sin
Original post
28 Jun 2025Developer post
The Oathbound Update
REMINDER: Mortal Sin is 40% off right now — and this is your last chance for a deep discount! As I approach the full 1.0 launch, the price will soon increase and future discounts will reset to much lower levels. So if you’ve been on the fence, now is the best time to dive in — or
REMINDER: Mortal Sin is 40% off right now — and this is your last chance for a deep discount!
As I approach the full 1.0 launch, the price will soon increase and future discounts will reset to much lower levels. So if you’ve been on the fence, now is the best time to dive in — or gift a friend while the sale lasts.
This is a massive update that brings the game closer than ever to my original vision. It also includes the full Quest Update Part I, which introduced new quest types built around spatial and timing-based objectives. If you missed it, read that announcement here.
🧬 New Feature: Oath System
A brand-new Oath System has been added! These are powerful run modifiers unlocked through Helena’s questline. Each one drastically alters gameplay with its own risk–reward twist, encouraging unique builds and new playstyles.
Oaths are unlocked as you level up Helena.
At levels 2, 4, and 6, you’ll choose between two Oaths per tier.
Most Oaths can be mixed and matched, but some (like level layout modifiers) are mutually exclusive.
✨ New Oaths
🧩 Fractured Realm
Each level becomes a branching puzzle of floor plates and locked rooms.
Rewards and traps appear more frequently.
Rooms from other areas always appear at the end of branching paths.
Portal rooms are longer and have branching paths.There's a forest in my dungeon...
🔥 Crucible Path
Each area has fewer rooms.
All rooms are replaced with arena battles.
Bosses drop up to 3 skill chests per arena battle.
💨 Divine Grace
Your block is replaced with a dodge.
Dodges consume guard meter and grant brief invincibility.
Dodging in time triggers a dodge parry.
Your next attack becomes a slow power strike dealing 400% bonus damage.
😱 Feast of Fright
Scares occur more frequently.
Scares have a chance to spawn Sinful Essence, up to 5 per level.
🧠 Gift of Insight
Equipment no longer provides stats.
All equipment grants skill stacks increasing with rarity.
💪 Gift of Might
Equipment no longer grants skills.
All equipment provides +50% increased stats.
Your stat limits are increased by 10%.
🕳 Hollow Tribute
Loot rooms no longer appear during the run.
Gain +30% more gold essence.
🌕 Providence Path
Each level becomes a long winding corridor.
Loot appears in each corridor and improves the farther you go.
⚔️ Sacred Flow
Only Shuffle Combos generate combo meter.
Combo meter gain is doubled when performing a Shuffle Combo.
🛡 Sacred Reflex
Parries have a much stricter timing window.
Parries grant more combo meter and unleash a shockblast.
💎 Snare of Avarice
Each room is either filled with traps or filled with rewards.
Breakable objects have a chance to drop loot chests.
🧬 Twisted Lineage
Enemies are randomized in each room.
Gain +15% chance to find rare items.
🛠 Gameplay & Content Updates
Meta quest rewards like Divine Retribution and Oaths now have distinct icons and colors to differentiate them from standard rewards.
Helena’s quest UI no longer closes after each reward — making it easier to claim multiple rewards in one go.
Gold Essence quest reward base amount increased from 15,000 → 50,000.
Skill stacking now goes beyond level 5, up to a hard cap of 25, with diminishing returns beyond the soft cap.
Class list reorder: Mage is now listed above Pirate to better reflect newcomer viability. Pirate will be reworked soon, and I’m planning changes to Vampire as well based on community feedback.
Auto combo improvements: You can now correctly charge a thrust or hold attack mid-combo.
Arena slow motion improvement: Buffered input is cleared if you're mashing during a slow-mo finisher to keep it cinematic.
🧩 World & Level Adjustments
Cave drop rooms now have elevators for backtracking, preventing softlocks in the Fractured Realm layout.
Quest storage overhaul: Dying now adds quests to a global reserve pool, which is only accessed on new saves. This fixes previous confusion and bugs around quest inheritance. Otherwise, once you hit the first save point, your saved session will track it's own quest rewards on that round as well as quests that are carried over to the next round.
🐛 Bug Fixes
Fixed: Divine Retribution would sometimes reappear even after being claimed.
Fixed: Issues with old quest reward reserve system that would delete rewards unexpectedly.
🎨 Visual & UI
Added a new loading splash screen that reflects the game’s realistic visual style. The classic version still appears if you're using legacy visuals.
🎁 Final Note
If you haven’t seen it yet, the Sulfur x Mortal Sin bundle is now available!
Pick it up here: Steam Bundle Page
Thank you for playing and supporting Mortal Sin — I’m incredibly grateful to be building this alongside such a passionate community. I can’t wait to deliver a full, robust 1.0 that brings the full vision to life.
Stay sinful,
–Nikola
Original post

Updates & announcements

🌍 New Languages

✨ New Unique Items

⚖️ Balance & Availability

🐛 Bug Fixes

New Mode: Blitz

New Content

Balance Changes

Fixes and Improvements

Closing

New Feature — Sin Remnants

Performance and Optimization

Gameplay and Systems

UI / UX

Audio

Sin Remnant List (40)

Defensive leaning

Offensive leaning

Run economy and carryover

New Content

Gameplay Changes

Quality of Life

UI Improvements and Fixes

Achievements and Progression

Boss and Encounter Adjustments

New Content

Combat and Gameplay Overhauls

Systems and Features

Visuals and Audio

Bug Fixes

Closing

Mark your calendars and prepare to attain Absolution.

🛡️ 12 New Unique Items

⛑️ Helmets

👢 Boots

🧤 Gloves

🛡️ Chest Armor

⚙️ General Improvements and Bug Fixes

🧠 Item and Stat System Changes

💥 Difficulty and Progression

🧙 Class Changes

🔥 Class Overhauls & Balance

💥 Combat & Combo Enhancements

🧨 Visual & Feedback Improvements

🛠️ Performance & UI Updates

📈 Stats, Systems & Progression

🏆 Achievements & Progress Tracking

🎃 Miscellaneous Tweaks

🧬 New Feature: Oath System

✨ New Oaths

🛠 Gameplay & Content Updates

🧩 World & Level Adjustments

🐛 Bug Fixes

🎨 Visual & UI

🎁 Final Note