Destroy 40 units with a single unit in an Unranked or Ranked game.
Destroy 4 Zerg Hatcheries in the “Zero Hour” mission on Hard difficulty.
Score the rank of Gold in the “Covert Ops” challenge mission.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Kill the Brutalisk with lava in "The Devil’s Playground” mission on Normal difficulty.