Well I just survived a run in with none other than the pyramid head in a morgue, right after he decided to blast his way into the room I was in, and after piddling around in the sewer for five minutes and seeing fucking dead people walking around out of the corner of my eye, I think ima try to sleep now instead.
If your looking for cheap 'jump out and scare you' or fast action with "horror" (stress on those quotes) monsters in it, look elsewhere. This game is more about atmosphere and psychological terror than something flying out you very loudly screaming. I havnt been this immersed, or scared of a game I think in ever. Dead space has a way to make you tense, but in games like that, you actually know something is going to jump out at you for a fact. In this game, it lets your imagination do the work.
Also, there is the fact that you can not actually fight them. Without a giant ass gun to just fill everything with lead, it makes it just that much more scary.