I liked this one a lot, the movement felt precise and fun, and the atmosphere was really nice with the music changes.
Falling down and having to walk back felt a bit punishing, this could be improved by having running, and maybe more shortcuts or respawn points.
I ended up collecting all of the blue bubbles, and two of the red bubbles. I wanted to get the last red one too on my way back down, but then misjudged a jump and didn’t feel like backtracking again :)