This was a really cool game! Simple goals and you knew exactly what to do right away.
The wall jumping is a bit tricky for me. Most of the time I'm trying to reach a platform with a double jump and I do a wall jump instead, sending me in a direction I wasn't intending. Honestly, perhaps if you only had double jumping OR wall jumping, that would be less of an issue, or, somehow require a bit of a different key combo (hard with minimal controls idea) for wall jumping.
Also... just an opinion... if the guy is turning on lights, it would have been cool to see some light and shadow effects in conjunction with turning on the lights. Just a random idea, but not something that takes away from the game without it.