Just replayed F.E.A.R. It's a combination of Max Payne with an asian horror movie. There are just two minor bad points: the horror factor is non interactive, meaning that the player doesn't interact in any way with Alma, the little girl who is killing everyone; the second complain is that there is too much repetition, the same environments were overused in very long levels.
After finishing F.E.A.R. I played Project Origin for the first time. Too bad that they changed the whole direction of the game. The whole atmosphere that made F.E.A.R. 1 terrific is gone, The graphics are better in terms of resolution, colors, bloom, HDR, but they sacrificed the realtime shadows everywhere. The environments are larger, with a greater cinematic feel, but they had to compromise the shadows and the flickering lights, which dumbed down the thriller atmosphere of the first game. I tend to agree with all the criticism about F.E.A.R. 2 being "consolized". Smashing button in QTE, lack of voicemails and the interface seems to be gamepad oriented.
Overall I think that the main flaw of F.E.A.R. is that it wasn't designed with a series in mind, there isn't much room for expanding it after the first game.