This was a new experience to me, since I've never played point and clicked puzzle games before. It's hard to say anything about puzzles without ruining the game, but I've found some of them to overcomplicated and detached from the overall good setup and chilling atmosphere. Let me put it this way: most of the puzzles were too abstract, and I wanted them to be more environment-oriented, since the environment itself was very impressive and was asking for exploration. But instead all the visual richness of the creepy photographic images served just as a kind of distraction, an obstacle, a mess in which the real puzzles (that usually had nothing to do with it) were hidden. I felt this like a big missed opportunity that could have been used to create a much richer and involving story.
Also, it may just be my unfamiliarity with the genre.