Okay, I played it. Sort of.
The first monster was really buggy and I had to sit in the cupboard for 5 minutes, only to realise he was spinning in circles on the spot. I then had to get to an unreachable spot and try and lead the monster to the door in order for him to break it.
When I entered the building after you leave the castle for the first time, I was a little annoyed to see my sanity set to 0, and me gasping on the floor because of some wind blowing inside. My sanity was at 'a slight headache', as I had been trying to keep it high, and my efforts felt pointless when this happened
Finally, the monster that came out the cupboard, I ninja jumped off the edge of the stairs and hid under the stairs. Again, the monster kept spinning in cirlces on the same spot. After my sanity dropping and crawling on the floor several times, I had to lead the monster downstairs, to which it wouldn't go away, since it could still see me, and I was pinned under the stairs. I had to throw something at it, just so I could go upstairs and hide.
Finally, the monster broke the door. I waited a few moments, then approached the door, and the monster sprinted full charge at me. My sanity dropped again and I was crawling on the floor and died.
THEN, I realised that you hadn't set a checkpoint, as I found myself in my bed where I started the demo and I couldn't go through the door that you locked behind the player, so I was stuck.
Besides a few annoyances, it was really fun, you should probably fix those things though...