Old savesgames will be incomaptible in many ways, I suggest restarting. At least when you are past the boss. Beating him triggers major events. If you are past him that won't get triggered.
- Reworked a lot of effects (explosions, projectiles...)
- Improved ground textures in the world
- 2 new enemy types
- Added new ammo-refilling system for the gun and added upgrades into shops
- Easier to use levers, buttons etc, don't have to aim perfectly anymore
- Added upgrade to destroy stone graves (you wont get it if you play with an old savegame)
- Improved boss fight and added more epic presentation (beating him triggers new enemies)
- Gun sounds and projectiles dynamically change their appearance according to the amount of damage the gun does (more = more)
- Gun shakes less when you got 2 cooldown upgrades
- Added mini-boss after you return with the first MacGuffin, likewise after the 2nd MacGuffin
- Slight AI improvements
- New Sword range upgrade in red town making sword fighting way more satisfying and less risky
- New shieldbreaker upgrade to get your shots through the skeleton warrior's shield in new puzzle
- Fixed prison cell scene not playing music
- Fixed ending button telporting you away
- Fixed that it's too hard and fiddly getting onto the star player's roof
- Enemy's damage effects will now be according to the amount of damage done
- Lots of other changes