This game reminded me a lot of Celeste, only in 3D. A very interesting experience and the concept is super cool — one of those hardcore titles that really require real skill. One more thing — please add bright signs showing the required button for each stage of the level, for inattentive keyboard players like me.
Because my gameplay went like this: I don't notice new mechanics and pass without it → I pull a 200 IQ+ move to get through without it → I reach a completely impossible spot → I check the description. (For example, in a level with air-gliding, someone made the second-jump distance mathematically precise, and only after getting past the section before the pink walls did I realize a new mechanic had been introduced.)
The game is great. The mechanics are very versatile. 9.5/10