Win 5 Team Unranked or Ranked games in a row.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Destroy a fully loaded transport in an Unranked or Ranked game.
Kill the Brutalisk with lava in "The Devil’s Playground” mission on Normal difficulty.
Destroy 15 Infested structures at nighttime in the “Outbreak” mission on Hard difficulty.