I am looking forward for your game. The difficulty is from my point of view OK. I died many times and had to restart the game, but when you start use your brain and avoid damage, its fine.
The atmosphere, monsters - wow, really piece of art.
What I was missing is some kind of marker, where I already was. I understand that you dont want minimap, but if you give the player Chalk fo example, so I can write something on the wall or floor, it would be amazing.
Thank you for the demo, gold luck with finalization and launch :)