Great job! The environments feel very fleshed out and were interesting to explore, wish there could have been some ambience audio though. It was a great design moment to walk into the dissolving corridor, running to the other end only to find a locked gate and then having that 'ah ha' moment to climb up on the wall ornaments.
Constructive feedback:
The helper texts being so low, sometimes I would miss them entirely and other times they'd get occluded by the environment. I think I noticed, with the dissolving floor that I could still walk on it after it dissolved. And like others said, it was fairly easy to get the character controller stuck at certain parts of the level.