Destroy 20 units with a single High Templar in a Melee game.
Win a 1 vs 4 Multiplayer Custom Game with no Allies against 4 Harder A.I. opponents.
Score the rank of Gold in all the challenge missions.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Destroy 40 units with a single unit in an Unranked or Ranked game.