Good job with the art and music, I really hate spikes now, even more than before somehow.
maybe instead of letting the player instalty fall back after stop pressing the spacebar the velocity could just be lowered or something? maybe divided by 2. because it feels a bit heavy.
also i got stuck when i jumped on the wall. I imagine this game to be extremly fun with an polished character controller :d hope i can see this after the jam :D