Nice little one-button game! In general, the game had some great levels to go through with escalating challenges and mechanics, it felt smooth to control and I had a lot of fun. I did think that there were some minor nitpicks to the gameplay though: I kind of wish that when you reach a wall, the character wouldn't just stop, but turn around and keep going automatically; I understand it if you're in the air, since you want to wall jump, but not when you're walking. Also, I don't know why when you reach a key door with a key, you bounce off of the door when it unlocks instead of going through effortlessly (you do in the air, but not on the ground). And that one level where you just have to trial and error which corridor to go down with no way to back out was a misstep though: that was just really unfair and unfun. Overall, though, nice game.