Score the rank of Bronze in the “For the Swarm” challenge mission.
Destroy 10 cloaked or burrowed units in a single Melee game.
Kill the Brutalisk with lava in "The Devil’s Playground” mission on Normal difficulty.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Complete all mission objectives in the “Whispers of Doom” mission.