This has potential. I'm not sure "collect mechanic" is the same as "no mechanic". But great design.

Loved it. Nice concept. You have to lower the character's hitbox and add some way to detect if the player is moving against a wall. 

Got kinda stingy there at the end with that ol' left and right.  Fun though!  Mayhaps something to help better plan out distance when L/R restricted.