Kill 750 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Complete the “Breakout” mission on Hard difficulty in less than 25 minutes.
Complete the "Haven’s Fall” mission with 5 settlements protected on Hard difficulty.
Kill the Brutalisk in the “Piercing the Shroud” mission without losing a unit to the Brutalisk on Normal difficulty.
Complete all the Covert mission achievements.