Battle.net

Beat the Terra-tron on the Lost Viking arcade machine.

Destroy 20 units with Sniper Rounds in an Unranked or Ranked game.

Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.

Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.

Kill 50 supply worth of units within 15 seconds in a Melee game.