Nice concept, nice way to take on infinite loop! but I think the game lacked music, and it got a little boring because there was no goal, I dont quite understand why theres benches I can sit on but thats cool, Id guess its to replenish ur stamina but maybe u should make a tutorial!
Add more variety to the stairs as the player progresses maybe to give them some satisfaction that they achieved something! or change up the looks of the walls, I love your game idea and I think u should expand on it :D