F.E.A.R. 2: Project Origin

You'll probably need to boost this, if only because multiplayer is dead for this game. You need a minimum of four people. Have one person host a ranked match, set it to Blitz, and select Conduit as the map. The others should have no trouble finding the match - when boosting in this game so far, I've just hit "Quick Match" and been put into my team's lobby literally every time.

Because only one team wins, and only one player on that team can get this achievement, you'll have to play one twenty-minute match for each person in your party. Designate the person before each match. That person should run get the PHLAG and come back when it's their team's turn to cap. When they are on defense, they just sit there. Everyone else can simply wait out the 20-minute match.

You might as well combine this with the Mad Capper achievement by having whomever is capping go ahead and cap 10 times. Just run for Point 1 and run back. You run faster if you have a lighter weapon equipped (switch to pistol with the LB); if you don't know the way, hit the Y button to bring up the map. You're headed to Point 1 in the top right-hand corner, then back to where you started on the left side. You have a couple of minutes leeway to get all 10 caps in, but don't mess around too much.

You'll unlock "Mad Capper" as soon as you hit 10 caps. MVP won't pop until the match actually ends. Once it's over, the host needs to set a game up again and everybody rejoins - unfortunately you don't get returned to a game lobby.

This achievement - and every other multiplayer achievement in the game - will go much faster if your four (or six) players are actually two (or three) people with multiple boxes and multiple copies of the game, since you don't need to spend time getting your secondary accounts the achievement.