Call down 30 MULEs in an Unranked or Ranked game.
Win 5 3v3 Versus A.I. games in a row against Very Easy opponents.
Score the rank of Gold in the “Tactical Command” challenge mission.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Destroy 10 cloaked or burrowed units in a single Melee game.