Battle.net

Score the rank of Gold in the “Tactical Command” challenge mission.

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

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

Use the A.R.E.S. to kill the Brutalisk in the “Piercing the Shroud” mission on Normal difficulty.

Score the rank of Gold in the “Rush Defense” challenge mission.