Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.
Have 9 Protoss units warping in simultaneously in an Unranked or Ranked game.
While playing as Zerg, warp in a Zealot in a Melee game.
Complete all the Outmatched achievements.