Graphics and art style are rather nice. The animations are quite effective; I liked the dash animation in particular (simple as it is). I liked the glowing effects of the coins too. Overall, it gives your game a nice depthsy kind of mood. Level feels decently built too. Can see that some work went into the Game Design aspect. Well done for making it all in the time allocated.
For improvements, some music would raise the experience of the game nicely. I'd also suggest adding some checkpoints for noobs like me who die near the end of levels ;)
Nice little submission. Keep it up!