Game controls will occasionally bug when you are shooting and moving at the same time. Holding the shoot button and releasing the direction button will keep you moving in the direction.
shuriken targetting needs a tweak to not go after random ninja, have the cursor do the targetting or something. also, jumping through the wheels and getting caught inside, and getting caught inside of the "earth" sigil platforms sucks.
Game locks if no audio device installed/enabled. Simple check to prevent this. We deafies shouldn't have to buy equipment we don't need! 1/5 until fixed.