Train 10 Marines during the first 320 seconds of a single Melee game.
Create 100 Larvae with Queens in an Unranked or Ranked game.
Score the rank of Gold in the “Psionic Assault” challenge mission.
Complete the “Enemy Within” mission in the Heart of the Swarm campaign.
Load a Dropship with a unit that is under attack in an Unranked or Ranked game.