Kill 50 supply worth of units within 15 seconds in a Melee game.
Destroy a total of 100 enemy units in Free-for-All Quick Match games.
Score the rank of Silver in the “Tactical Command” challenge mission.
Win 3 1v1 Unranked or Ranked games in a row.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.