I have to say that I genuinely loved this game. I really liked the relationship between the characters and the victims. However, my concern is that this game might not have enough guidance for a new player, or that the mansion is a bit too sprawling to know where you need to go after a while. I always had SOME idea of where to go, but there were times where I'd go there only to be instantly killed by whatever was waiting because I either didn't have the right item (or didn't USE the right item) or the event made a beeline for me before I knew it was coming. I actually spent a good ten minutes looking around for things to do because one event bumrushed me twice and I thought maybe I was missing an item or a switch I hadn't gotten; turns out, I was supposed to run ahead but her movement speed was faster than my own and her movement AI was INCREDIBLE those first two times. The third time, she actually froze and didn't move. That's definitely not on you, but I'm concerned that particular event could really frustrate a player if they get unlucky with it like I did.
I liked how battles were challenging but not overly insane, I think you balanced THOSE out perfectly. I think my biggest vexing point were all of the instant deaths. It was funny for a few times, but after death 8, I started to get annoyed. I think I was axed four times out of my 14 deaths because I forgot you could walk over a corpse, and I kept doing it like a doofus. I'm not sure if you should necessarily change them, but I think warnings for some of them might keep a player from getting too frustrated with them. I actually thought one of them was supposed to be a hidden item behind a wardrobe, so I was definitely not thrilled when I got a game over from it. That aside, though, this was one of the most enjoyable games I've played so far. You did a great job, and I really don't think you need to worry about the game being too short.