Defeated the Rakk Hive, the Vault Boss, Sledge, Krom, or Flynt in a co-op game

Earned level 20

Killed Sledge

Applied an elemental artifact

Killed 25 enemies with shock weapons

Killed 25 enemies with explosive weapons

Rescued a groupmate from death in a co-op game

Killed 5 Rakk in under 10 seconds

Killed 25 enemies with incendiary weapons

Killed an enemy with the Siren's action skill

Earned level 5

Won a duel without taking damage

Finish the game in Normal Mode