According to these user reviews FEAR seems to be a love or hate experience. People junk this game for repetitive levels, bad graphics, and lack of enemy diversity. I just don't see any of that except maybe the bad level complaint is valid.
Although who cares about how the levels look when the gameplay is so solid. I just played this game again in 2014 and it's still an awesome game. My one complaint with this game is even on the hardest difficulty it is still a bit too easy.
The reason people love or hate this game is because its focus is the same gameplay over and over in different variations so if you don't like the shooting mechanic you will pretty much hate the whole game. Monolith has an epic resume of games.