Kill 750 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Purchase StarCraft II Wings of Liberty Collector’s Edition.
Complete the “A Sinister Turn” mission on Hard difficulty in less than 25 minutes.
Kill 20 enemy units with the Laser Drill in “The Dig” mission on Normal difficulty.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.