My only complaint is that it is pretty hard to see whats coming at you. The overlay of the attack/jump buttons are on the same level as the ground. I see that you can see through them, but I felt that wasn't enough.
I found myself hitting enemies without even knowing they were there, so I found myself moving a little forward and stopping, moving some more and stopping. Which I don't think is how you intended to have the game played.
I would suggest finding a way to handle this, maybe a different layout on the screen, right now it seems the buttons make up 30%+ of my screen(I have a G2). I notice some games make the buttons completely invisible after a time, reasoning being is that you learn where to press the screen. (although those games usually have less buttons then you do).
Overall it was a pretty smooth game, nice graphics and animations. Good job!