Use the Artifact no more than once in the “All In” mission on Hard difficulty.
Complete 25 missions in the Wings of Liberty campaign on Hard difficulty.
Load a Dropship with a unit that is under attack in an Unranked or Ranked game.
Complete all 29 Wings of Liberty campaign missions on Normal difficulty.
Complete “The Moebius Factor” mission before Kerrigan destroys 6 Abandoned Structures on Hard difficulty.