Complete 20 missions in the Wings of Liberty campaign on Hard difficulty.
Complete the “Shatter the Sky” mission on Hard difficulty in less than 25 minutes.
Destroy 10 cloaked or burrowed units in a single Melee game.
Win 50 Versus A.I. games against Medium opponents.
Kill the Brutalisk in the “Piercing the Shroud” mission without losing a unit to the Brutalisk on Normal difficulty.