Do a 6 combo gem break and receive "For the Swarm" notification in a game of ’StarJeweled’.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Score the rank of Bronze in the “Psionic Assault” challenge mission.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Complete the Wings of Liberty campaign.