Oh wow I enjoyed playing your game a lot! Feels somewhat like super meat boy or even Celeste :)
I think you nailed the character control - it's really pleasant to navigate this black and white world. Maybe only the wall jumps are a bit janky, but I managed to work around them haha.
In terms of level design, I'd avoid situations where player has to yolo jump into nothingness and hope for the best - I think you better show the destination platform and obstacles on screen when the player is about to jump off the last platform.
Nonetheless, really great submission, one of my favorites in this jam!