Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Kill the Brutalisk in the “Piercing the Shroud” mission without losing a unit to the Brutalisk on Normal difficulty.
Complete the “Maw of the Void” mission without losing a unit inside the Rip-Field on Hard difficulty.
Complete all the Guide Three achievements.