Very cool idea, the visual is great too.
The control is pretty hard, you can consider tone down the difficulty, I've heard somewhere on youtube you can put the difficulty at where you'd find too easy and a bit boring, that'd be the right difficulty for the player, also idk if it's just me but I took me a while to figure out that the empty hole was the opened door, I expected to open it myself or something.
The execution is great and the idea is unique, I think it'd be perfect if it's just a bit easier :D