Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Score the rank of Gold in the “For the Swarm” challenge mission.
Create 100 Larvae with Queens in an Unranked or Ranked game.
While playing as Zerg, warp in a Zealot in a Melee game.
Kill 50 supply worth of units within 15 seconds in a Melee game.