Absolutely incredible game.
I did have an issue with finding the Rectory 2nd floor key. I don't know if there was a hint I missed, but I had to turn to a walkthrough to find it.
The horror atmosphere really got to me, especially in the Church and the Mines. There aren't any overt jump-scares, but a few of the times when a door would automatically shut, or a floorboard would creak, it would give me quite a fright.
I nearly quit at the section after the Church tape, as it was getting a bit much for me, but I'm glad I stuck with it, as the ending is superb.
I rate it 9/10.