Using Auto-Turrets, destroy 20 worker units in an Unranked or Ranked game.
Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Score the rank of Gold in all the challenge missions.
Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.
Win 50 1v1 Unranked or Ranked games as Zerg.