no regen, boss has more health, boss takes 0 dmg from knuckleblaster, enemies spawn 0.1 second slower but glide faster, good luck
- ULTRAKILL but cat -listen to 'Versus' here https://www.youtube.com/watch?v=BhEnjxYLBYo&list=PL_7N2OGhRlMf2Hi3eDKvJlW9IUV366oT3&index=11
