Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.
Destroy a total of 5,000 enemy units in Free-for-All Quick Match games.
Destroy 20 units with a single High Templar in a Melee game.
Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.
Complete all the Outmatched achievements.