Complete the “Supernova” mission on Normal difficulty without losing a unit to the wall of fire.
Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.
Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Destroy 20 units with Sniper Rounds in an Unranked or Ranked game.
Score the rank of Gold in the “Covert Ops” challenge mission.