Very cool game, really nice atmosphere! I liked how huge the house felt, was that intentional to cast the player as someone who is very young?
I did notice a few elements that could be polished, for instance, on the web version, my mouse wasn't captured, so my frame of turning was very limited and I had to play the game minimized so I could turn around properly. Also, the darkness is very dark, and it is harder to navigate than I feel it should. I want the game challenge to come from the monster being harder to avoid rather than it being difficult because of the controls or the environment navigation.
Also, great plot twist ending.
Another note is that I feel the writing could be a bit more polished, but that was probably out of scope for the time given!