Full list of all 50 F.E.A.R. 3 achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Complete 30 challenges in one Interval
Complete 500 total challenges between all categories
Possess every type of possessable enemy
Attain a total of 50,000 score on Interval 08
Finish the Campaign on INSANE difficulty
Complete any campaign level on INSANE without reloading checkpoints or going into Last Stand
Attain Rank 21
Make 100 Psychic Links (Share or Steal)
Finish a wave of Contractions on INSANE without anyone going into Last Stand
Complete Interval 07
Find the Alma Doll on every Mission
Kill 250 total enemies during Slow Mo
Complete Interval 08
Finish the Campaign on any difficulty (all Intervals complete)
Complete Interval 06
As Fettel, suspend 100 enemies that Point Man kills
Complete Interval 05
Pin 100 total enemies with The Penetrator or Leaper knives
Complete Interval 04
Attain a total of 250,000 points through challenges
Complete wave 20 in Contractions
Return 30 crates in one game of Contractions
Kill 10 enemies in a row with Sniper Rifle headshots
Perform 50 revives in any game mode
Attain Rank 10
Attain a total of 25,000 Souls across all rounds of a Soul King match
Win all 5 rounds of a 5-round Soul King match
Kill 1000 enemies by any method in any game mode
Win 20 rounds of Soul King
20 kills with a crowbar
Possess 20 different enemies in one round of Soul King
Complete Interval 03
Find something worth punching!
Kill 2 enemies with 1 Slide Kick during Slow Mo
Complete Interval 02
As Point Man, kill 100 enemies suspended by Fettel
Complete Interval 01
In the Poker Room of Prison, kill all 3 enemies with headshots before slo-mo ends
Spend an entire round of Contractions in deep fog without going into Last Stand
Survive 3 waves in Contractions in a row without anyone bringing back a crate
Kill 100 enemies with Jump Kick or Slide Kick
Attain a total of 6,000 Souls in one round of Soul King
Complete every challenge at least once
Attain a total of 95,000 score on Interval 01
Attain a total of 85,000 score on Interval 02
Attain a total of 95,000 score on Interval 03
Attain a total of 105,000 score on Interval 04
Attain a total of 110,000 score on Interval 05
Attain a total of 70,000 score on Interval 06
Attain a total of 110,000 score on Interval 07