Complete 5 missions in the Wings of Liberty campaign on Hard difficulty.
Cancel construction of a structure that is being destroyed by an opponent in a Melee game.
Win 10 evenly matched Custom Games as Random against Very Easy A.I. opponents.
Mutate a Lair during the first 285 seconds of a Melee game.
Kill the Marauder Kill Team in “The Great Train Robbery” mission on Normal difficulty.