Destroy 40 units with a single unit in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Score the rank of Gold in all the challenge missions.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Elite A.I. opponents.