Score the rank of Gold in the “Psionic Assault” challenge mission.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.
Score the rank of Gold in the “Path of Ascension” challenge mission.
Complete all the Outmatched achievements.
Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.