I love the fact that it's a single level you play from start to end to start. The fact that each character has different properties both while controlling and upon death was a really nice touch. (I especially liked the ending and all zero of the easter eggs). One thing I think could be improved is the yarn character - aside from making rope their stats are more or less the same as the default character. If you ever expand on this game, improving it would be a nice touch.
Great work!