I really, really liked the atmosphere of this game! The colorpalette was awesome, the aftereffects were neat. The music fitted very well as well, but unfortunately it started playing very late for me :/
For the gameplay, I was a little annoyed at how I would stick to walls if I jumped at them. The way I often solve this is by adding a frictionless physics material to the collider of the ground. Maybe that will fix it for you as well :)
Thanks a lot for this! I really liked it :D