great to see young game writers publishing firsts. that said, you've got a ways to go in terms of game DESIGN, you appear to have the basic knowledge to make some cool (but simple) stuff though :)
I tried a few mp3s, and your game proves to be very good at playing them... and the animation for the gyrocopter and bullets is good... so are any enemies going to show up at some point?
ok, really annoying glitch that's quite subtle until it happens: if you get flatted by the hammer and fall towards the ground, you fall through... fix you hitTest guys, that's a simple one. other than that, AMAZING game