Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Destroy a fully loaded transport in an Unranked or Ranked game.
Score the rank of Gold in the “Tactical Command” challenge mission.
Destroy 10 cloaked or burrowed units in a single Melee game.