I'm going to be honest. The puzzles in this game need more guidance. The maps are really well done, but I had a very difficult time getting through this because several quest items you need give you no clue as to how you're supposed to use them. Most of my time was spent going through rooms I'd already picked through trying to figure out what I've missed, since I had no idea what to do after a while. The puzzles also need some explanation in order to solve some of them, otherwise the player won't know what to do. The only way I was able to figure out the book puzzle was because I saw the game streamed and remembered the answer. If you come back to this after the jam, I really recommend putting in different descriptions for some of the items, at least to help the player figure out what it is they need to do next.
Despite that, though, I want you to know that the atmosphere and setting are really good. The lighting was a great way to pressure the player, and the insane amount of blood and skeletons really let us know that something's really off with the manor. Good job.