Complete 15 missions in the Wings of Liberty campaign on Brutal difficulty.
Survive 15 Infested Horde Attacks in the “Night 2 Die" mode of the “Left 2 Die” scenario.
Complete the “Left 2 Die” scenario before the fifth night on Brutal difficulty.
Prevent the Protoss from capping a Tal’darim Altar in the “Welcome to the Jungle” mission on Hard difficulty.
Play a game of StarCraft II during the 15th anniversary celebration.