Destroy 4 Zerg Hatcheries in the “Zero Hour” mission on Hard difficulty.
Complete the “Whispers of Doom” mission on Hard difficulty without Zeratul suffering life damage.
Kill 750 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Destroy 10 cloaked or burrowed units in a single Melee game.
Complete the “Breakout” mission on Hard difficulty in less than 25 minutes.