Amazing game!
Simple, fun and engaging.
The kind of game that should be submitted for a gamejam.
If I get to be picky I would add a better indicator for doors opening from the bottom.
And if i can give you an extra tip on tutorial:
Instead of text, gifs with keybindings would work better. (but that is my subjective opinion)
Very nice art, fitting music and sfx.
Very solid entry. Great job.