Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Destroy a fully loaded transport in an Unranked or Ranked game.
Beat the Terra-tron on the Lost Viking arcade machine.