F.E.A.R. 3 has gone the co-op route, with the majority of the game being centred around the idea that when someone plays the game's campaign mode that it'll be with someone else. This is evident due to the amount of multiple flanking positions throughout the game that look like they were made specifically for two players to take advantage of, as well as a scoring system which encourages players to try and earn more points by completing challenges in order to become Alma's "favourite son," though said system is more-or-less flawed as whoever players Paxton Fettel is bound to win due to his abilities that allow him to basically run through the level taking over the bodies of every enemy and suspending them in the air.
Aside from the inclusion of co-op and the fact that you can take cover behind objects now thanks to a cover system, not much has changed on the gameplay side of things. You still use slow-motion to take down groups of enemies (if you're playing as Point Man, that is) and there are several different variations of unarmed attacks that you can use.
Things get really interesting, but at the same time disappointing, when it comes down to the multiplayer aspects of the game. There is no Team Deathmatch or Capture the Flag or anything of that nature, instead you have unique game modes such as Soul Survivor, which sees all 4 players on the same team until Alma appears and causes one of said players to turn into a phantom that must now kill the other three, or F**king Run where a team of 4 must survive the Wall of Death while blasting their way through enemies as they desperately try to push forward, and a more standard game mode called Contractions which is basically survival mode with a couple of F.E.A.R. twists added to the mix with Alma making appearances and punishing anyone who looks into her eyes.
The gameplay is definitly nice, however the fewer number of scary moments most certainly left me disappointed. The short campaign didn't help with this either.