Destroy all Protoss structures in the “Welcome to the Jungle” mission on Normal difficulty.
Score the rank of Gold in all the challenge missions.
Complete the Wings of Liberty campaign under 8 hours of total played mission time on Normal difficulty.
Use the Artifact no more than once in the “All In” mission on Hard difficulty.
Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.