Full list of all 81 Borderlands: Game of the Year Edition trophies - 59 bronze, 17 silver, 4 gold and 1 platinum.
The base game contains 51 trophies, and there are 4 DLC packs containing 30 trophies.
Killed the Vault Boss
Killed Flynt
Killed the Rakk Hive
Discovered Eridian Promontory
Discovered Crimson Lance Enclave
Defeated the Rakk Hive, the Vault Boss, Sledge, Krom, or Flynt in a co-op game
Killed Krom
Completed 5 missions in the Rust Commons
Discovered Trash Coast
Discovered Krom's Canyon
I bet you never thought you'd be here
Discovered The Scrapyard
Killed 15 enemies with the Berserker's action skill
Killed 15 enemies with the Hunter's action skill
Killed an enemy with the Siren's action skill
Earned level 30
Earned $1,000,000
Killed Sledge
Mastered the technology of Pandora
Earned level 20
Raced around the Ludicrous Speedway in record time
Killed 25 enemies with incendiary weapons
Killed 25 enemies with corrosive weapons
Completed all missions in the Arid Badlands
Killed 25 enemies with shock weapons
Reached proficiency level 10 with any weapon type
Sold 50 guns to a shop
Killed 25 enemies with explosive weapons
Applied an elemental artifact
Emerged victorious from an arena match
Killed 15 enemies with the Soldier's action skill
Play with at least two other players.
Killed an enemy plumber-style
Equipped a class mod for your character
Killed 25 enemies by ramming them with any vehicle
Discovered Headstone Mine
Killed 5 Rakk in under 10 seconds
Discovered Sledge's Safe House
Earned level 10
Won a duel against another player
Won a duel without taking damage
Completed 15 missions in co-op
Earned level 5
Rescued a groupmate from death in a co-op game
Discovered Skag Gully
Completed 5 missions in the Arid Badlands
You have defeated all bosses and are a powerful force to be reckoned with
Completed all missions in the Rust Commons
Earned level 40
Earned level 50
Rescued enough Claptraps to earn 42 inventory slots
Completed the "Braaaaaaaaaaaaains!" mission
Killed Ned. Again.
Killed Ned...sort of
Completed the "Jakobs Fodder" mission
Completed the "House of the Ned" mission
Completed the lesser challenge in all 3 coliseums
Completed the larger challenge in the Hell-Burbia coliseum
Completed the larger challenge in The Angelic Ruins coliseum
Completed the larger challenge in The Gully coliseum
Completed each of the larger challenges in all 3 coliseums
Destroyed Lance Depot
Rescued Athena
Destroyed a Lancer while in a Racer
Built the New Car: Monster
Killed Crawmerax the Invincible
Killed each of the loot midgets
Reached Level 51
Reached Level 61
Completed all missions in Secret Armory
Paid for a worthless tour of the world's largest bullet
Completed a crazy request for Tannis
Found all 6 Claptrap statues
Killed the Interplanetary Ninja Assassin Claptrap
Collected 5 3D glasses
Killed Commandant Steele-trap
Killed Dr. Ned-trap
Killed General Knoxx-trap
Found 25 oil cans
Collected 15 Claptrap bobbleheads
Collected 3 panties, 5 fish in a bag, and 15 pizzas