The artwork, polish and feels are really good!
You clearly see where this could go and the mechanic is super interesting ! Well done !
I have some feedbacks, I'm not a pro dev so take it with a grain of salt of course, but just in case it can helps:
- I got stuck for a while on the first level : first because I had trouble reading the font and figuring out the controls, the font adds a lot to the ambiance but I think there is an inbetween for a more readable one, then because I didn't really understood the door mechanism, could be just me though. But each time, I had to go through the tuto again which felt a bit like a punishment ahah.
- Speaking of the tuto/ui, it felt Iike I should be able to go full keyboard, since the game doesnt require mouse inputs.
- Maybe i'd also consider changing the controls for the x/e mechanics for only one buttonsince both actions can't happen at once anywa. And maybe for something more accessible to the right hand (space, k), or maybe the other way around arrow and space.
Again, very nice take on the theme, good job averall, I really loved the mood of your game ! Good job overall !