Cool game ! I think the concept is really interesting and the level design is good, plus the platforming part is well crafted, but I think there are way to many different keys to remember for the player. It makes it a bit more tedious than it could be. For example, is the press lever key really necessary ? Instead of levers, you could use pressure plates that activate automatically. Instead of 3 keys to select the power, use one to switch to the next one. It would leave you with only two action keys (throw/pick head and change power), which would have me a bit less confused at the start.