The graphics and music is really great. Especially the art is some of the best iv'e seen this jam. I also really like the idea.
But, for beeing a platformer / shooter your character moves very slowly and the bullets move kinda like ballons instead of bullets / lazers. Therefore i feel like the game is a bit of a chore to play sometimes. But, if the mechanics were polished a bit and there were maybe a couple other levels to play with, i think it could be a really fun game.