Complete the Tosh storyline in the Wings of Liberty campaign.
Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Save 2 Colonist Outposts in the “Safe Haven” mission on Hard difficulty.
Kill the Brutalisk in the “Piercing the Shroud” mission without losing a unit to the Brutalisk on Normal difficulty.
Complete “The Evacuation” mission on Hard difficulty without losing or salvaging a structure.