Nice submission!
The pixel art animations are great, the controls are also perfectly done and feel natural.
I found the difficulty a bit too high in my opinion, but maybe I'm just not good at it. I understood the concept of being on the edge and gaining boosts that way, I think it's very cleaver but might be more visible ingame by, for instance, changing the music pitch or adding some effects to the player to understand that you're gaining something (the lil sweat drop feels just like you're going to sleep lol).
Overall it's a cool game for 10 days of work, congrats.