Battle.net

Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.

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

Score the rank of Gold in the “For the Swarm” challenge mission.

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.