The concept behind the game is really interesting, but I don't understand how it fits the theme.
The game is really scary but fun to play, the puzzles make you think, but after some time they get repetetive. I would suggest adding some more elements like you did with the card and the gate to make new puzzles a little different.
There is a bug where the lighting gets messed up for one frame after you restart a level, but that is hardly noticable and doesn't break the game or anything.
Overall an amazing entry to the jam, though I wish it fit the theme better. Great job!