Battle.net

Destroy 40 units with a single unit in an Unranked or Ranked game.

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

Cancel construction of a structure that is being destroyed by an opponent in a Melee game.

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

Destroy 30 units with Infested Terrans in an Unranked or Ranked game.