Destroy 4 Zerg Hatcheries in the “Zero Hour” mission on Hard difficulty.
Kill the Brutalisk with lava in "The Devil’s Playground” mission on Normal difficulty.
Complete the “Whispers of Doom” mission on Hard difficulty without Zeratul suffering life damage.
Complete 10 missions in the Wings of Liberty campaign on Brutal difficulty.
Destroy 50 Protoss structures in “The Dig” mission on Hard difficulty.