Complete all the Outmatched achievements.
Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Complete all 29 Wings of Liberty campaign missions on Hard difficulty.