The assets are cute, while being quite frightening. I liked the artistic choice of colors. There is a great amount of work on animations, but I think they would look best with larger strokes and less in-between frames. The overall design is well thought of.
Concerning game design, it would maybe have been better to have some checkpoints because not knowing where to go is a bit frustrating + it is really really easy to die in the beginning of the game (when trying to figure out controls).
Great work overall :)