Right, I need 5 players for some Horde and Versus achievements in Gow3. And 4 plays for the Coop campaign achievement.
(DONE) "Host with the most" I need to host a private Horde match with a party of 5 players on any Horde Command Pack map (any difficulty).
(DONE) "Places to see, people to destroy" I need to host a private Beast match with a party of 5 players on any Horde Command Pack map (any difficulty).
(DONE) "Kill locust (Like a boss)" We need to defeat a Boss Wave as 5 Onyx Guards (Hardcore difficulty).
(DONE) "Zeta team, Go" We need to complete waves 1-10 of Horde with 5 players as Zeta (Barrick, Tai, Minh, Valera and Jace).
(DONE) "Come to pappa" We need to win a Versus multiplayer match as a team of five Recruit Claytons (any mode).
(DONE) "Locust, Forever!" We need to win a Versus multiplayer match as a team of five Savage Marauders (any mode).
"Force Multiplier" We need to kill a Lambent Berserker with a team comprised of 5 Forces of Nature characters in Horde.