Complete the Wings of Liberty campaign.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Kill 20 enemy units with the Laser Drill in “The Dig” mission on Normal difficulty.
Complete the “Ghost of a Chance” mission using Dominated units to kill at least 15 enemy troops on Normal difficulty.