Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Win 100 Team Unranked or Ranked games as Zerg.
Kill the Marauder Kill Team in “The Great Train Robbery” mission on Normal difficulty.
Complete 25 missions in the Wings of Liberty campaign on Hard difficulty.
Kill 50 supply worth of units within 15 seconds in a Melee game.