Battle.net

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.

Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.

Destroy 4 Command Centers, Hatcheries, or Nexuses in an Unranked or Ranked game.

Kill 50 supply worth of units within 15 seconds in a Melee game.