Kill 50 supply worth of units within 15 seconds in a Melee game.
Mutate a Lair during the first 285 seconds of a Melee game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Destroy 4 Command Centers, Hatcheries, or Nexuses in an Unranked or Ranked game.
Complete the Wings of Liberty campaign.