weird but interesting concept but i think it would benefit more from arcade-style gameplay wherein enemies are added slowly as you go on. it's also pretty hard to control, especially for the last level. managed to get just one piece of cheese though :)
ah, when i mentioned arcade-style gameplay, i meant something that wasn't level-based, wherein you play a single round that gets progressively harder. sorry about that, should've been a little more specific.
you don't have to change it entirely though, i still appreciate you changing it from my feedback. i think it's a good starter game :)