Use the Artifact no more than once in the “All In” mission on Hard difficulty.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Complete the “Ghost of a Chance” mission using Dominated units to kill at least 15 enemy troops on Normal difficulty.
Win 5 1v1 Unranked or Ranked games in a row.
Win 3 Matchmaking Versus A.I. games.