Really nicely done.
It's like a 2D Miegakure ^^
I love the minimalism in the visuals. it works quite nicely.
For this jam I'm mainly interested to see how developer solve issues when they remove the core mechanic of their choosing and I think you handled it quite well. The position of the key to move the character and rotate are next to each other. And especially the platform you jump on changes color which relly help to orientate yourself and know which part you explore or not.
Excellent job