Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Locate all 13 weapon pickups in the “Piercing the Shroud” mission on Hard difficulty.
Score the rank of Gold in the “Covert Ops” challenge mission.
Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Destroy 40 units with a single unit in an Unranked or Ranked game.