Complete 10 missions in the Wings of Liberty campaign on Brutal difficulty.
Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.
Prevent the Protoss from capping a Tal’darim Altar in the “Welcome to the Jungle” mission on Hard difficulty.
Complete the “Breakout” mission without Tosh going below 100 life on Normal difficulty.
Save 2 Colonist Outposts in the “Safe Haven” mission on Hard difficulty.