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 10 cloaked or burrowed units in a single Melee game.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Cancel construction of a structure that is being destroyed by an opponent in a Melee game.