Battle.net

While playing as Zerg, warp in a Zealot in a Melee game.

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

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

Score the rank of Gold in the “Infestation” challenge mission.

Warp in 5 Zealots during the first 250 seconds of a single Melee game.