Complete the "Haven’s Fall” mission with 5 settlements protected on Hard difficulty.
Don’t train additional SCVs before purchasing Han’s contract in the “Cutthroat” mission on Hard difficulty.
Score the rank of Gold in the “Rush Defense” challenge mission.
Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Score the rank of Gold in the “Infestation” challenge mission.