-Good soundtrack
-Nice map
-Enjoyable story and dialogue
-Gameplay is correct

But what tanks the rating so much for me ?
The really bad backtracking and exploration. I never minded backtracking (in fact I like when game does it properly) but this one was so infuriating sometimes especially when you need to guess which fckng card works for a door.

Also the puzzles...literally "you have to know it" moments.