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.
Mutate a Lair during the first 285 seconds of a Melee game.
Warp in 100 units with Warp Gates in an Unranked or Ranked game.