Kill 15 enemies with the Hunter's action skill

Unlocked: 23 Dec 2012 05:17 am

Kill 15 enemies with the Berserker's action skill

Unlocked: 23 Dec 2012 04:51 am

Kill an enemy with the Siren's action skill

Unlocked: 23 Dec 2012 04:37 am

Complete all missions in the Arid Badlands

Unlocked: 22 Dec 2012 04:37 am

Rescue enough Claptraps to earn 42 inventory slots

Unlocked: 22 Dec 2012 04:22 am

Complete all missions in the Rust Commons

Unlocked: 22 Dec 2012 03:58 am

Killed the Vault Boss

Unlocked: 22 Dec 2012 02:21 am

Discover Eridian Promontory

Unlocked: 22 Dec 2012 02:17 am

Discover Crimson Lance Enclave

Unlocked: 22 Dec 2012 02:00 am

Killed Flynt

Unlocked: 22 Dec 2012 01:29 am

Killed the Rakk Hive

Unlocked: 21 Dec 2012 03:16 am

Discover Trash Coast

Unlocked: 21 Dec 2012 03:14 am

Win an arena match

Unlocked: 15 Dec 2012 03:22 am

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

Unlocked: 15 Dec 2012 03:15 am

Killed Krom

Unlocked: 15 Dec 2012 03:15 am

Rescue a groupmate from death in a co-op game

Unlocked: 15 Dec 2012 03:13 am

Discover Krom's Canyon

Unlocked: 15 Dec 2012 03:06 am

Kill 25 enemies with incendiary weapons

Unlocked: 15 Dec 2012 02:59 am

Kill 25 enemies with corrosive weapons

Unlocked: 15 Dec 2012 02:41 am

I bet you never thought you'd be here.

Unlocked: 15 Dec 2012 02:40 am

Mastered the technology of Pandora

Unlocked: 15 Dec 2012 02:32 am

Complete 5 missions in the Rust Commons

Unlocked: 15 Dec 2012 02:22 am

Discover The Scrapyard

Unlocked: 15 Dec 2012 01:35 am

Race around the Ludicrous Speedway in under 31 seconds

Unlocked: 14 Dec 2012 11:43 pm

Reach Level 61

Unlocked: 14 Dec 2012 03:25 am

Complete all missions in Secret Armory

Unlocked: 14 Dec 2012 03:25 am

Reach Level 51

Unlocked: 14 Dec 2012 02:48 am

Earn level 50

Unlocked: 14 Dec 2012 02:46 am

Earn level 40

Unlocked: 12 Dec 2012 01:50 am

Kill Crawmerax the Invincible

Unlocked: 12 Dec 2012 01:50 am

Kill each of the loot midgets

Unlocked: 12 Dec 2012 01:30 am

Destroy the Lance Depot

Unlocked: 12 Dec 2012 12:56 am

Rescue Athena

Unlocked: 11 Dec 2012 02:09 am

Earn level 30

Unlocked: 11 Dec 2012 02:04 am

Sell 50 guns to a shop

Unlocked: 11 Dec 2012 01:53 am

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

Unlocked: 11 Dec 2012 01:47 am

Destroy a Lancer while in a Racer

Unlocked: 11 Dec 2012 01:04 am

Build the New Car: Monster

Unlocked: 11 Dec 2012 12:24 am

Complete the "Braaaaaaaaaaaaains!" mission

Unlocked: 11 Dec 2012 12:08 am

Kill 25 enemies with explosive weapons

Unlocked: 10 Dec 2012 02:44 am

Kill 25 enemies with shock weapons

Unlocked: 10 Dec 2012 12:57 am

Apply an elemental artifact

Unlocked: 10 Dec 2012 12:08 am

Killed Ned. Again.

Unlocked: 9 Dec 2012 11:42 pm

Killed Ned...sort of

Unlocked: 9 Dec 2012 11:40 pm

Complete the "Jakobs Fodder" mission

Unlocked: 9 Dec 2012 11:13 pm

Complete 15 missions in co-op

Unlocked: 9 Dec 2012 10:59 pm

Complete the "House of the Ned" mission

Unlocked: 9 Dec 2012 06:38 pm

Reach the end of the larger challenge in The Gully coliseum

Unlocked: 30 Nov 2012 01:26 am

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

Unlocked: 30 Nov 2012 01:26 am

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

Unlocked: 24 Nov 2012 12:03 am

Earn level 20

Unlocked: 23 Nov 2012 10:39 pm

Reach proficiency level 10 with any weapon type

Unlocked: 23 Nov 2012 10:39 pm

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

Unlocked: 21 Nov 2012 03:07 am

Kill 15 enemies with the Soldier's action skill

Unlocked: 19 Nov 2012 02:26 am

Kill 5 Rakk in under 10 seconds

Unlocked: 19 Nov 2012 01:22 am

Kill 25 enemies by ramming them with any vehicle

Unlocked: 19 Nov 2012 12:55 am

Complete the Prove Yourself mission

Unlocked: 19 Nov 2012 12:27 am

Equip a class mod for your character

Unlocked: 18 Nov 2012 02:46 am

Killed Sledge

Unlocked: 18 Nov 2012 02:42 am

Discover Headstone Mine

Unlocked: 18 Nov 2012 02:34 am

Discover Sledge's Safe House

Unlocked: 18 Nov 2012 02:17 am

Discover Skag Gully

Unlocked: 18 Nov 2012 01:48 am

Earn level 10

Unlocked: 18 Nov 2012 01:47 am

Win a duel against another player

Unlocked: 18 Nov 2012 12:22 am

Win a duel without taking damage

Unlocked: 18 Nov 2012 12:22 am

Complete 5 missions in the Arid Badlands

Unlocked: 17 Nov 2012 11:46 pm

Earn level 5

Unlocked: 17 Nov 2012 11:44 pm

Earn $1,000,000

Unlocked: 17 Nov 2012 11:44 pm

Kill an enemy by stomping on its head

Unlocked: 17 Nov 2012 11:35 pm

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

Unlocked: 17 Nov 2012 11:19 pm