Very good. The game is easy, but I had fun anyway because everything works so well. What took me the most time was how to solve the 4 panels puzzle, as they are in 4 different rooms. In my opinion, they should be activated in the rooms to be used next to the door leading to the "boss".
The puzzle was hard and took most of the hour it took me to complete the game.
The boss was fun, there should be one more step after lowering the middle button completely.
Definitely 5 stars. Thanks for your great work.