Congratulations for finishing your game. But you still have much to learn.
1. There is no feedback when you get hit. That's a big must have!
2. The characters are to "slow" to control, it was way to hard to dodge the incoming rocks.
3. The camera was to close to the player, you couldn't see the rocks fast enough.
The music and the art itself were good, I liked those. Also the theme was nicely implemented.