Fun idea and the art style really works for you. Good explanations throughout and gradual increase in complexity. The "pick a pipe" style multiple doors is often more frustrating than fun, and the final level can be pretty much entirely skipped by just grappling right to the door. Your weakest link here was audio: most moves have no sound, including breaking glass, but the "landing from a jump" sound effect is pretty loud. The music also kind of starts and stops somewhat randomly, it doesn't feel like there's a reason why one song is playing instead of the other.