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.
Complete the “Domination” mission in the Heart of the Swarm campaign.
Win 500 1v1 Unranked or Ranked games as Zerg.
Complete the “Old Soldiers” mission in less than 20 minutes on Normal difficulty.