Currently, Cellien level 5 can only be spawned in the "Debug Room".
- Changed the display method of the Friend's Guts gauge.
- For Cellien Level 5, adjusted impact resistance, movement speed, and rotation speed to match Level 4.
- For Cellien Level 5, changed the color of types without weak point stones (Emerald → Diamond).
- Changed the sorting order of the Cellien HP gauge to appear in front of damage text.
- Slightly adjusted the appearance of HP gauges for Friend, Cellien, and boss Cellien.
- Added "Lithograph of Construction" to the items that appear in X-class containers.
- Added enlargement to the drill attack of "Wing bolt" Level 5.
- Added a specification where the maximum movement distance of "Plug adapter"'s body press attack varies by level.
- Changed "Plug adapter"'s electric current attack so that sound effects and particles play before the attack hitbox begins.
- Shortened the attack condition distance for "Plug adapter" Level 2 and Level 3.
- Added homing lightning attack to "Plug adapter" Level 5.
- For "Smart ball" Level 5, changed normal damage judgment to defense multiplier ×20 and impact multiplier ×0.
- Added eruption to "Smart ball" Level 5's body press attack.
- Strengthened "Debris" Level 5's rush attack by adding spikes.
- Strengthened "Debris" Level 5 so that after 12 seconds of detecting a target, its block throw attack adds destructible Cellien seeds.
- Added upward aiming capability to "Amoeba" Level 5's scissor attack.
- Added clone-summoning slash attack to "Dissodinium pseudolunula" Level 5.
- Adjusted "Ceratium tripos" horn extension and horn swing-down attacks so they can be reliably countered with Screw Attack.
- Added upward aiming capability to "Ceratium tripos" Level 5's horn extension attack.
- Improved accuracy of "Ornithocercus magnificus"'s fan-throw attack.
- Fixed a bug where if Cellien's level changed during "Ornithocercus magnificus"'s fan-throw attack, unthrown fans could remain.
- Changed "Ornithocercus magnificus" Level 5 to throw giant fans.
- Added wall-breaking effect to "Chaetoceros affinis" Level 5's giant needle attack.
- Added a direct overhead strike type to "Euglena" Level 5's whip attack.
- Added wall-breaking effect to "Volvox" Level 0–3's self-destruct attack.
- Added large bomb throw attack to "Volvox" Level 5.
- Added powerful laser beam attack to "Alexandrium catenella" Level 5.
- Added slow status effect to "Ambigolimax valentianus" Level 5's poison trap.
- Added rock attack with eruption to "Camponotus japonicus" Level 5.
- Added knockback effect to "Anotogaster sieboldii" Level 5's bamboo-copter attack.
- Reduced retreat distance after shell-shooting and hammer attacks of "Scorpiones" and "Scorpiones magnus".
- Added explosion to "Scorpiones" and "Scorpiones magnus" Level 5 shells.
- Fixed a bug where "Scorpiones magnus"'s map chip became oversized.
- Added fast-moving blue spiderlings to "Araneus ventricosus" Level 5.
- Added eruption to "Araneus ventricosus" Level 5's body press attack.
- Added 12-needle firing to "Aurelia aurita" Level 5's spinning attack.
- Adjusted animations of "Daphnia pulex"'s arm swing-down and spinning attacks.
- Increased turning speed of "Daphnia pulex" Level 5 when not attacking.
- Extended reach of "Daphnia pulex" Level 5's arm swing-down attack.
- Added needle trap effect to "Daphnia pulex" Level 5's ranged needle attack.
- Added upward aiming capability to "Aedes albopictus" Level 5's proboscis stab attack.
- Changed HP recovery from "Aedes albopictus" Level 5's proboscis stab attack to 80× the damage dealt.
- Added upward aiming capability to "Tenodera aridifolia" Level 5's wave attack.
- Added effect change and expanded hitbox to "Tenodera aridifolia" Level 5's wave attack when equipped with scythes.
- Added a specification where "Polistes rothneyi" Level 2+ switches from close-range attack mode to long-range attack mode after chasing a target for a certain time.
- Strengthened "Polistes rothneyi" Level 5's needle-throw attack to throw multiple needles and added poison status effect.
- Added triple fireball attack to "Parantica sita" Level 5.
- Added three-direction ice needle attack to "Parantica sita" Level 5.
- Added wall-breaking effect to "Birdlien" Level 5's tail-swing attack.
- Strengthened "Birdlien" Level 5's gust attack to three-direction shots.
- Changed "Enypniastes eximia" Level 5 to no longer perform escape actions.
- Added forward counter-avoidance judgment to "Enypniastes eximia" Level 5.
- Added recovery performance (6 seconds after destruction) to "Clione limacina" Level 5's ice armor.
- Strengthened "Clione limacina" Level 5's ice bomb to three-direction shots.
- Strengthened "Bathynomus giganteus" Level 5's rolling and body press attacks so spiked actions are always selected.
- Strengthened "Bathynomus giganteus" Level 5's rolling attack so target-tracking actions are always selected.
- Strengthened "Oligochaeta" Level 5's fissure attack to three-direction shots.
- Strengthened "Oligochaeta" Level 5's digging attack to generate mud traps at emergence points.
- Added specification for "Ramazzottius varieornatus" Level 4+ to switch from close-range to long-range attack mode after chasing without attacking for a while.
- Increased weak point stones to 6 for "Ramazzottius varieornatus" Level 5.
- Increased endurance count to 24 times for "Ramazzottius varieornatus" Level 5 when weak point stones remain (survive with 1 damage).
- Shortened molting interval to 6 seconds for "Ramazzottius varieornatus" Level 5.
- Added status effect that forces HP to 1 to "Ramazzottius varieornatus" Level 5's extreme environment attack.
- Strengthened "Ammonitida" Level 5's ink block throw and spinning rush attacks so clone actions are always selected.
- Added target-tracking capability to "Ammonitida" Level 5's spinning rush attack.
- Changed "Amanita muscaria" to not perform spore attacks immediately after detecting a target.
- Added target-tracking capability to "Amanita muscaria" Level 5's rush attack.
- Added fire trap effect to "Amanita muscaria" Level 5's Kaentake attack.
- Added performance to "Amanita muscaria" Level 5's spore attack to generate 4 destructible Cellien seeds.
- Added performance to "Periplaneta fuliginosa" Level 5's bite attack to generate destructible Cellien seeds upon hit.
- Reduced collision detection against terrain for "Anomalocaris canadensis"'s Hallucigenia.
- Added target-tracking capability to "Anomalocaris canadensis" Level 5's weeding attack.
- For "Anomalocaris canadensis" Level 5, changed normal damage judgment (except head) to defense multiplier ×20 and impact multiplier ×0.
- Added acid status effect to "Halocynthia roretzi" Level 5's splash attack.
- Halved bomb respawn time for "Halocynthia roretzi" Level 5.
- Added horizontal electric shock attack to "Dankleosteus telleri" Level 5.
- Strengthened "Dankleosteus telleri" Level 5's tail blade attack by adding blades to both sides.
- Strengthened "Dankleosteus telleri" Level 5's tail spin attack by adding blades above.
- Added bomb scattering ability to "Dankleosteus telleri" Level 5's bite attack.
- Strengthened "Tyrannosaurus rex" Level 5's beam attack to three-direction shots.
- Strengthened "Tyrannosaurus rex" Level 5's meteor attack to fire two meteors.
- Added division ability (up to 40 clones every 40 seconds when no target) to "Eomaia scansoria" Level 5.
- Changed "Australopithecus afarensis" Level 5 to always flee from targets and only perform shout actions.
- Added functionality for "Desmodesmus communis", "Chaetoceros affinis", "Birdlien", and "Parantica sita" Level 5 to always target the player character even outside the search area range.
- Adjusted the timing when the knockdown recovery gauge of "Dark Serval", "Queen", and other boss Celliens changes into the impact endurance gauge.
- Fixed a bug where, in save data where the player character transformed into Kaban and summoned Serval using Kaban's ability, summoning many random Friends could sometimes also summon Serval.
- Fixed a bug where Lion's bangs clipped into the head. (Changed "Dynamic Bone" settings)
- Fixed a bug where the bangs bones of Nana, Oinari-sama, and Ineko Kitsunezaki were incorrectly mapped as jaw bones.
- Fixed a bug where the lower jaw tooth bones of Mirai and Kako were incorrectly mapped as jaw bones.