Ok... Lets go over a couple things.
Checkpoints: I'm glad to see that a platformer in a jam has them, and sectioned on good respawn points.
The, Imma call them, Gravity Wells: nice mechanic and, surprisingly, intuitive, as someone that dislikes lengthy text dumps as "tutorials" it is great to see a game use it's mechanics to tech itself, via environment and level design rather than text. easing in the different colors and functions on sports that we can clearly see what they do.
A thing, small one, that did got in the way of the game controlling a little better is that I think the wall jump raycast was killing the jump height if you jumped near something that was a higher, even if by a tiny bit, level than were you were standing, a bit annoying to get around, but doesn't hurt the game that much, only makes the player have to plan around it.
To conclude. Art and music were nice. With a couple little adjustments and a bit of polish, you got yourself there a neat little platformer. Good job on the game