Kill 20 enemy units with the Laser Drill in “The Dig” mission on Normal difficulty.
Win 3 solo evenly matched Custom Games as Terran against any A.I. opponents.
Complete 10 missions in the Wings of Liberty campaign on Hard difficulty.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Score the rank of Gold in the “Tactical Command” challenge mission.