Destroy 40 units with a single unit in an Unranked or Ranked game.
Score the rank of Gold in the “Tactical Command” challenge mission.
Morph 20 Zerglings during the first 255 seconds of a single Melee game.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Complete 3 challenge missions with a Bronze rating or higher.