Play enough qualifying games to get placed in a Matchmaking Ranked League.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Win 10 Team Unranked or Ranked games as Protoss.
Use Blink to save a Stalker in a Melee game.