Killed 25 enemies with corrosive weapons

Discovered Krom's Canyon

Emerged victorious from an arena match

Discovered Sledge's Safe House

Killed 5 Rakk in under 10 seconds

Killed 25 enemies by ramming them with any vehicle

Discovered Skag Gully

Killed 15 enemies with the Soldier's action skill

Equipped a class mod for your character

Killed 25 enemies with explosive weapons

Won a duel against another player

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

Earned level 10