Regardless, F.E.A.R. isn't all about action. It's also about the creepy girls walking around killing things with their minds...
But the real creepiness comes not from big scary monsters, but from a tiny female child. Visions begin happening halfway through the level, showing glimpses of the creepy little child ala The Shining, but things suddenly get considerably worse. After finding a room completely covered in blood and full of various body parts, and having another flash of creepiness with different sound, dizziness, and visual changes, more of the story is revealed.
When this building first came under attack, the government sent in a Delta Force group to take care of the problem. Their fate became obviously clear as they slowly moved through the building. Unfortunately for them, there was something following them. A slowly moving, perfectly paced, and patient child... who just happens to be horribly evil. The first one to die had his left arm explode off of his body in a shower of blood while the next started bleeding from his neck and the last one... well apparently it was bad enough that they didn't really want to show it. All that was shown was the large spray of blood on the walls and twitching legs.
And the weirdest thing? The girl never even touched them. So what was the deal? We don't know. They won't f'n tell us! I hate them now and have to wait to play the game! I hate waiting! I'm spoiled damnit... They will pay!