Kill the Marauder Kill Team in “The Great Train Robbery” mission on Normal difficulty.
Score the rank of Silver in the “Path of Ascension” challenge mission.
Destroy 10 cloaked or burrowed units in a single Melee game.
Destroy a fully loaded transport in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.