Completed 5 missions in the Arid Badlands

Completed 5 missions in the Rust Commons

Killed an enemy plumber-style

Killed Sledge

Killed Flynt

Killed the Vault Boss

Applied an elemental artifact

Earned level 10

Earned level 30

Discovered Skag Gully

Discovered Headstone Mine

Discovered The Scrapyard

Discovered Crimson Lance Enclave

Earned level 50

Killed 5 Rakk in under 10 seconds

Sold 50 guns to a shop

Won a duel against another player

Completed 15 missions in co-op

Played in a co-op game with either an employee of Gearbox or someone who had this trophy

I bet you never thought you'd be here

Killed 25 enemies with corrosive weapons

Killed 25 enemies with incendiary weapons

Equipped a class mod for your character

Killed an enemy with the Siren's action skill

Killed 15 enemies with the Berserker's action skill

Completed the "House of the Ned" mission

Killed Ned...sort of

Completed the "Braaaaaaaaaaaaains!" mission

Completed the larger challenge in the Hell-Burbia coliseum

Completed the larger challenge in The Gully coliseum

Built the New Car: Monster

Destroyed Lance Depot

Killed each of the loot midgets

Reached Level 51

Completed all missions in Secret Armory

Found all 6 Claptrap statues

Killed Commandant Steele-trap

Killed the Interplanatary Ninja Assassin Claptrap

Found 25 oil cans

Collected 5 3D glasses