Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Complete the Mar Sara missions in the Wings of Liberty campaign.
Destroy a fully loaded transport in an Unranked or Ranked game.
Expand during the first 225 seconds of a Melee game.
Kill 50 supply worth of units within 15 seconds in a Melee game.