Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Destroy 4 Command Centers, Hatcheries, or Nexuses in an Unranked or Ranked game.
Build a Factory during the first 270 seconds of a Melee game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Complete all 29 Wings of Liberty campaign missions on Normal difficulty.