What a nice idea! This makes me want to see a version with more content, and maybe, adjusted/improved physics. It felt a little bit odd to play in some places, especially when using the "crouch dash jump", for me, otherwise it's great.
The level design is fantastic, it feels like each room has been playtested a lot too. Also it's a quite "open" design, so that each can make their own route to complete the game (and I did!), it's just so cool to realize that doing the game in any ways you pick up the stones, is possible and not causing softlocks.
I also found that the velocity gained from a wall jump is pretty OP, I managed to skip a good chunk of the game with it lol. I think with improvements, this can genuinely be a good speedrun game as well.
Good job for the submission!