Cool idea! Only suggestion I have is maybe come up with some hints to indicate the path forward. Maybe quickly flash the entire level at the beginning of each loop so the player has to move based on memory? Or maybe particles that drop down and bounce off the invisible floors and spikes?
I got up to level 8 :) But then I kept messing up jumping over the spikes and trying to land in the small gaps. Was there another path I could've taken?