Complete all the Outmatched achievements.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.
Win 15 3v3 Versus A.I. games in a row against Elite opponents.
Win a 1v1 Multiplayer Custom Game against an Elite A.I. opponent in under 5 minutes.
Win a 1 vs 4 Multiplayer Custom Game with no Allies against 4 Harder A.I. opponents.