The competitive mode and the 3rd level are missing.
I think it could increase the radius of bullets when paired with them. like a saw or something.
Yeah, you basically turn into a walking hitbox.
I got it on 5-2, also the purple worms seem to pretty buggy. They basically go behind the level. Pretty similar to the super mario bros 3 glitch.
I got a bug where enemies are inside of the wall. This made it impossible to move on. Maybe the rooms could open automatically if you take too long.
