It sounds like a good concept and a good team, but there's a few technical issues that I noticed...apparently horizontal jump velocity is calculated at the moment of the jump, and can't be significantly altered by keypresses during the jump, so if you jump while standing still you can't move very far to the left or right. Made jumping over obstacles annoying, because I'd have to back up and run in order to get enough momentum to move while jumping.
Also got a few Javascript crashes (playing on web--I bet it's more a problem with your game's web implementation than the game itself).
The platforms that are solid white feel like temporary art and don't mesh with the other (really good) tileset.
That being said, it was fun to play and had some boppin music! Way to go!