This was almost too awesome for words
But I'll try anyway. As per my usual method, I'm going to break it down by category and explain each one.
Graphics: There is pretty much nothing to explain here. They were simply awesome. Perfect, even. I loved the combination of real pictures and drawings. It was perfectly spooky, adding to the perfect atmosphere of this perfect game. Perfect 10.
Style: Oh man, this had one of the best styles I've ever seen. The combination of the spooky atmosphere and especially the use of traditional "adventure" type games, with elements from action and puzzle games made it refreshingly unique, so a 10.
Sound: I think the sound could have been better. There was a bit too much variance in volume, and I could hardly hear the EVP sounds. I know I was supposed to turn up the volume, but anyway, it still gets a 9.
Violence: Yes, yes, yes! There's so much! I love violence so this was good... at the same time, it was done very very well, to add to the overall effect. So a 10.
Interactivity: It was very interactive, and done in such a neat way. There were puzzles and adventure-style action. Still, it was somewhat limited, albeit necessarily so. 8/10.
Humor: I don't think there was much humor, if there was, it was of the morbid sort, so I only give it a 3.
Overall: However, overall it was perfect for what it was supposed to be. Ergo, I give it the perfect 10.