Hey there.
Tried your game and while I think the sprites are cute, the game unfortunately seems to be broken.
-Dragon's projectile travels in an arc and gets only as far as how much you press and hold down the Space bar. -While this isn't necessarily bad, it is when there are 20 hungry uglies coming at you from behind.
-I tried jumping but it only seemed to displace the character about half a jump and the critters can still touch his lower half.