Score the rank of Gold in all the challenge missions.
Destroy 40 units with a single unit in an Unranked or Ranked game.
Complete the Wings of Liberty campaign under 8 hours of total played mission time on Normal difficulty.
Destroy a fully loaded transport in an Unranked or Ranked game.
Survive 15 Infested Horde Attacks in the “Night 2 Die" mode of the “Left 2 Die” scenario.