Kill 50 supply worth of units within 15 seconds in a Melee game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Destroy 40 units with a single unit in an Unranked or Ranked game.
Destroy 20 units with a single High Templar in a Melee game.
Score the rank of Gold in the “Infestation” challenge mission.