Made it to level 5 or so, with the purple shooty mouse, and couldn't find the exit. You didn't leave a description, so is the gimmick that you damage yourself when you hit enemies?

A criticism I have is that the horizontal mouse controls are really weird and sluggish, with some sort of acceleration. That made it really hard to play; I have to drag my mouse across my desk several times just to turn around, and then the camera keeps spinning like it has momentum. The vertical mouse controls seemed to work normally.

Might be worth noting that Chrome thought the file might be harmful for some reason (unlike the other games submitted).