Kill 250 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Purchase all Mercenary contracts.
Complete the “Left 2 Die” scenario on Hard difficulty.
