This is, hands down, the most fun I've had playing a GWJ game. Working through the puzzles with a friend was hugely satisfying, the music and sound design was great, and the premise is really, really clever. I don't think I've ever played a game quite like this.
Beyond the odd puzzle that didn't make the deadline, a slight lack of colour from the visuals (which are otherwise very nicely drawn and animated), and a certain [redacted] in the ending, I'm hard-pressed to find anything at fault here.
Great work, everyone.