Complete all objectives in less than 12 minutes in the “Harvest of Screams” mission on Hard difficulty.
Complete 25 missions in the Wings of Liberty campaign on Brutal difficulty.
Destroy the Planetary Fortress in the “Old Soldiers” mission before the nuclear strike on Hard difficulty.
Score the rank of Gold in the “Psionic Assault” challenge mission.
Score the rank of Gold in the “Harbinger of Death” challenge mission.