Kill 20 enemy units with the Laser Drill in “The Dig” mission on Normal difficulty.
Complete 5 missions in the Wings of Liberty campaign on Brutal difficulty.
Complete the "Haven’s Fall” mission with 5 settlements protected on Hard difficulty.
Kill 75 enemy units or structures with cloaked Banshees in the “Supernova” mission on Hard difficulty.
Beat the Terra-tron on the Lost Viking arcade machine.