Cool game.
However, I think you should add a few things here and there.
Such as a very low yet hearable background loop, just to make things better you know, so you don't only hear the noises of the game that can get "irritating" after a while. You could also add more details in the stage area, maybe a tree or something, a little frozen lake, who knows?
You SHOULD really add the following:
- More levels. Please. I loved the game, but it was too short.
- Maybe add a "How to Play" instructions thingy. It took me a few seconds to catch how to play...
Keep it up man !
ALEX