This was a really great experience! You did a marvelous job creating an earie and chilling atmosphere and I felt very engaged the whole way through.
My one tiny nitpick: I would have liked a little more indication that the game was over at the end. I'm not necessarily asking for any narrative closure, I liked how the ending was ambiguous, but something to make it more clear that the experience had ended (for a couple seconds I thought that it might have crashed or bugged out).
Other than that I think that this was pretty much perfect, you left me hungry for more! :)
P.S. I read the reply that you left in which you said that you "avoid doing a lot of jumpscares because it can kill the mood of the game". I agree and really respect your choice! I have a deep love for the horror genre and believe that jump scares are easily it's weakest (and most creatively shallow) element.