Use a Leviathan to kill 25 enemy units or structures in a single mission.
Use the Artifact no more than once in the “All In” mission on Hard difficulty.
While playing as Zerg, warp in a Zealot in a Melee game.
Score 500,000 points on the Lost Viking arcade machine.
Destroy the Odin in “The Reckoning” mission before Mengsk sends it at Raynor on Hard difficulty.