Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.
Complete the Wings of Liberty campaign under 8 hours of total played mission time on Normal difficulty.
Win 10 Versus A.I. games against Elite opponents.
Use the Artifact no more than once in the “All In” mission on Hard difficulty.