It's such an interesting approach to the theme! I love the song too!
I think I found a bug where, if you press the menu after you started the game, you won't be able to move unless you reset the stage.
It can also be a little frustrating to have the box stuck since you don't have any way to pull them from a wall, unless you reset the stage.
Also, it's I think it needs some player feedback when doing actions such as playing a sound when the lever is pulled, or changing the sprite when the button is pressed. when we're close to a lever, it would be great to see some indication that we can do an action, such as a highlight.
I do think this concept is full of potential for a puzzle tho. With a little polishing, I'm sure you can make a great game out of it! it was really creative!!!