My god. Am I really playing a Jam game? Full menu screen, detailed tutorials, complex puzzles (multiples of them) and even a hub area. Very atmospheric too. There's just so much packed into this game that its hard to believe it's done in 4 days. I don't think I can provide a lot of meaningful feedback, but maybe consider looking into different difficulty curves. Having a hub area is super cool, but it was a bit confusing where to go first (maybe it didn't matter?).
This really blew my mind; it already feels like a paid game lol.