Discover Crimson Lance Enclave

Unlocked: 18 Jun 2011 22:38:57

Killed Flynt

Unlocked: 11 Jun 2011 23:52:32

Earn $1,000,000

Unlocked: 11 Jun 2011 23:22:32

Earn level 30

Unlocked: 04 Jun 2011 22:56:09

Killed the Rakk Hive

Unlocked: 02 Jun 2011 18:09:53

Discover Trash Coast

Unlocked: 02 Jun 2011 17:51:28

Killed Krom

Unlocked: 21 May 2011 00:20:54

Discover Krom's Canyon

Unlocked: 21 May 2011 00:02:33

Kill 25 enemies with corrosive weapons

Unlocked: 18 May 2011 10:17:03

Discover The Scrapyard

Unlocked: 14 May 2011 23:55:13

Reach proficiency level 10 with any weapon type

Unlocked: 14 May 2011 23:07:55

Complete 5 missions in the Rust Commons

Unlocked: 14 May 2011 23:04:58

Mastered the technology of Pandora

Unlocked: 13 May 2011 16:02:53

Earn level 20

Unlocked: 10 May 2011 10:37:19

Kill 25 enemies with shock weapons

Unlocked: 09 May 2011 17:27:28

Apply an elemental artifact

Unlocked: 07 May 2011 23:37:30

Equip a class mod for your character

Unlocked: 07 May 2011 22:52:25

Kill 25 enemies by ramming them with any vehicle

Unlocked: 07 May 2011 22:51:21

Killed Sledge

Unlocked: 07 May 2011 22:31:44

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

Unlocked: 07 May 2011 22:31:43

Sell 50 guns to a shop

Unlocked: 07 May 2011 10:48:50

Discover Headstone Mine

Unlocked: 07 May 2011 10:34:02

Win a duel against another player

Unlocked: 07 May 2011 10:27:03

Win a duel without taking damage

Unlocked: 07 May 2011 10:27:03

Discover Sledge's Safe House

Unlocked: 06 May 2011 16:06:34

Rescue a groupmate from death in a co-op game

Unlocked: 06 May 2011 15:52:55

Kill 25 enemies with explosive weapons

Unlocked: 06 May 2011 15:47:24

Kill 25 enemies with incendiary weapons

Unlocked: 06 May 2011 14:08:03

Earn level 10

Unlocked: 06 May 2011 14:03:39

Complete 15 missions in co-op

Unlocked: 03 May 2011 17:02:37

Kill 15 enemies with the Berserker's action skill

Unlocked: 03 May 2011 16:10:02

Discover Skag Gully

Unlocked: 03 May 2011 15:31:45

Earn level 5

Unlocked: 03 May 2011 11:35:01

Complete 5 missions in the Arid Badlands

Unlocked: 03 May 2011 10:31:34

Complete all missions in the Arid Badlands

Unlocked: Offline

Complete all missions in the Rust Commons

Unlocked: Offline

Killed the Vault Boss

Unlocked: Offline

Earn level 40

Unlocked: Offline

Discover Eridian Promontory

Unlocked: Offline

Kill 5 Rakk in under 10 seconds

Unlocked: Offline

I bet you never thought you'd be here.

Unlocked: Offline

Kill an enemy with the Siren's action skill

Unlocked: Offline

Kill an enemy by stomping on its head

Race around the Ludicrous Speedway in under 31 seconds

Earn level 50

Win an arena match

Play in a co-op game with either an employee of Gearbox or someone who has this achievement

Rescue enough Claptraps to earn 42 inventory slots

Kill 15 enemies with the Hunter's action skill

Kill 15 enemies with the Soldier's action skill

Killed Ned. Again.

Unlocked: 12 May 2011 17:27:07

Killed Ned...sort of

Unlocked: 12 May 2011 17:22:55

Complete the "Jakobs Fodder" mission

Unlocked: 11 May 2011 11:34:17

Complete the "House of the Ned" mission

Unlocked: 10 May 2011 11:04:47

Complete the "Braaaaaaaaaaaaains!" mission

Complete the Prove Yourself mission

Reach the end of the larger challenge in the Hell-Burbia coliseum

Reach the end of the larger challenge in The Angelic Ruins coliseum

Reach the end of the larger challenge in The Gully coliseum

Reach the end of each of the 3 larger challenges with one character

Build the New Car: Monster

Unlocked: Offline

Rescue Athena

Unlocked: Offline

Destroy the Lance Depot

Unlocked: Offline

Destroy a Lancer while in a Racer

Unlocked: Offline

Kill Crawmerax the Invincible

Kill each of the loot midgets

Reach Level 61

Complete all missions in Secret Armory

Paid for a worthless tour of the world's largest bullet

Knoxx is at rest...finally

Unlocked: Offline

The Commandant is dead-trap

Unlocked: Offline

Killed Ned...again and again and again

Unlocked: Offline

Kill the INAC

Unlocked: Offline

Complete a crazy request for Tannis

Unlocked: Offline

Collect 5 3D glasses

Unlocked: Offline

Find all 6 Claptrap Statues

Find 25 oil cans

Collect 15 claptrap bobbleheads

Collect 3 panties, 5 fish in a bag, and 15 pizzas

Reach Level 51