Wow, I love this take on the theme, very original! Very detailed, polished, and immersive for a jam game, which really helps sell the spookiness. It's designed very well, I was able to figure out the puzzles on my own which is perfect, makes the player feel clever :)
I felt like I was able to cheese things a bit by getting to glance at the diagonal tiles while I switched between orthogonal facings, not sure if that was intentional. However I think without that the later levels might have felt a bit too much like simple trial and error? Hard to say, and it's all just a nitpick anyways, amazing job!
Feel free to check out our game Einnsamr as well <3 https://itch.io/jam/gmtk-2019/rate/463168