Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Complete all 29 Wings of Liberty campaign missions on Hard difficulty.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.