Kill 15 enemies with the Berserker's action skill

Unlocked: 14 Feb 2011 01:27:47

Kill 15 enemies with the Soldier's action skill

Unlocked: 14 Feb 2011 01:16:23

Kill an enemy with the Siren's action skill

Unlocked: 10 Feb 2011 06:33:48

Killed the Vault Boss

Unlocked: 22 Jan 2011 14:52:17

Complete all missions in the Rust Commons

Unlocked: 22 Jan 2011 14:52:12

Discover Eridian Promontory

Unlocked: 22 Jan 2011 14:44:11

Discover Crimson Lance Enclave

Unlocked: 22 Jan 2011 11:07:09

Rescue enough Claptraps to earn 42 inventory slots

Unlocked: 22 Jan 2011 11:02:06

Killed Flynt

Unlocked: 22 Jan 2011 10:10:58

Killed the Rakk Hive

Unlocked: 22 Jan 2011 07:52:55

Discover Trash Coast

Unlocked: 22 Jan 2011 07:48:42

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

Unlocked: 21 Jan 2011 03:50:10

Killed Krom

Unlocked: 21 Jan 2011 03:50:09

I bet you never thought you'd be here.

Unlocked: 21 Jan 2011 03:40:45

Discover Krom's Canyon

Unlocked: 21 Jan 2011 02:46:01

Complete 15 missions in co-op

Unlocked: 18 Jan 2011 05:53:01

Discover The Scrapyard

Unlocked: 16 Jan 2011 07:00:49

Complete 5 missions in the Rust Commons

Unlocked: 16 Jan 2011 06:18:47

Kill 25 enemies with corrosive weapons

Unlocked: 16 Jan 2011 05:56:57

Mastered the technology of Pandora

Unlocked: 16 Jan 2011 05:51:04

Apply an elemental artifact

Unlocked: 16 Jan 2011 05:38:29

Complete all missions in the Arid Badlands

Unlocked: 16 Jan 2011 03:24:33

Race around the Ludicrous Speedway in under 31 seconds

Unlocked: 16 Jan 2011 03:02:28

Kill an enemy by stomping on its head

Unlocked: 16 Jan 2011 02:25:07

Kill 25 enemies with incendiary weapons

Unlocked: 16 Jan 2011 01:32:29

Win an arena match

Unlocked: 15 Jan 2011 15:09:07

Kill 5 Rakk in under 10 seconds

Unlocked: 15 Jan 2011 15:01:41

Killed Sledge

Unlocked: 15 Jan 2011 06:15:44

Kill 25 enemies with shock weapons

Unlocked: 15 Jan 2011 06:10:50

Discover Headstone Mine

Unlocked: 15 Jan 2011 06:01:49

Discover Sledge's Safe House

Unlocked: 15 Jan 2011 05:37:08

Rescue a groupmate from death in a co-op game

Unlocked: 15 Jan 2011 05:24:05

Earn level 20

Unlocked: 15 Jan 2011 05:22:06

Kill 15 enemies with the Hunter's action skill

Unlocked: 15 Jan 2011 05:16:02

Equip a class mod for your character

Unlocked: 15 Jan 2011 05:05:01

Earn level 50

Unlocked: 15 Jan 2011 04:43:35

Earn level 40

Unlocked: 15 Jan 2011 04:25:35

Earn level 30

Unlocked: 15 Jan 2011 04:10:33

Reach proficiency level 10 with any weapon type

Unlocked: 15 Jan 2011 04:01:11

Kill 25 enemies with explosive weapons

Unlocked: 15 Jan 2011 03:48:57

Sell 50 guns to a shop

Unlocked: 15 Jan 2011 03:40:38

Earn $1,000,000

Unlocked: 15 Jan 2011 03:39:15

Earn level 10

Unlocked: 15 Jan 2011 03:27:36

Kill 25 enemies by ramming them with any vehicle

Unlocked: 15 Jan 2011 03:01:48

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

Unlocked: 14 Jan 2011 04:45:14

Discover Skag Gully

Unlocked: 14 Jan 2011 03:27:11

Earn level 5

Unlocked: 14 Jan 2011 03:18:08

Complete 5 missions in the Arid Badlands

Unlocked: 14 Jan 2011 03:01:02

Win a duel against another player

Unlocked: 14 Jan 2011 02:40:09

Win a duel without taking damage

Unlocked: 14 Jan 2011 02:40:09

Complete the "Braaaaaaaaaaaaains!" mission

Unlocked: 29 Jan 2011 06:48:16

Killed Ned. Again.

Unlocked: 27 Jan 2011 06:27:19

Killed Ned...sort of

Unlocked: 27 Jan 2011 06:23:19

Complete the "Jakobs Fodder" mission

Unlocked: 27 Jan 2011 05:44:46

Complete the "House of the Ned" mission

Unlocked: 23 Jan 2011 03:01:51

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

Unlocked: 08 Jun 2011 06:00:35

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

Unlocked: 08 Jun 2011 06:00:34

Reach the end of the larger challenge in The Gully coliseum

Unlocked: 07 Jun 2011 05:24:31

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

Unlocked: 27 Mar 2011 05:39:16

Complete the Prove Yourself mission

Unlocked: 04 Feb 2011 04:35:52

Complete all missions in Secret Armory

Unlocked: 26 Feb 2011 06:12:45

Kill each of the loot midgets

Unlocked: 22 Feb 2011 06:47:31

Destroy the Lance Depot

Unlocked: 22 Feb 2011 05:44:00

Rescue Athena

Unlocked: 29 Jan 2011 08:13:59

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

Unlocked: 29 Jan 2011 07:58:09

Build the New Car: Monster

Unlocked: 29 Jan 2011 07:07:12

Reach Level 61

Unlocked: 15 Jan 2011 05:19:10

Kill Crawmerax the Invincible

Unlocked: 15 Jan 2011 04:01:24

Destroy a Lancer while in a Racer

Unlocked: 15 Jan 2011 03:56:08

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

Unlocked: 22 Feb 2011 13:41:53

Find 25 oil cans

Unlocked: 21 Feb 2011 04:16:49

Collect 15 claptrap bobbleheads

Unlocked: 21 Feb 2011 04:16:08

Complete a crazy request for Tannis

Unlocked: 20 Feb 2011 19:24:32

Kill the INAC

Unlocked: 20 Feb 2011 19:20:30

The Commandant is dead-trap

Unlocked: 20 Feb 2011 04:10:03

Killed Ned...again and again and again

Unlocked: 20 Feb 2011 04:07:09

Find all 6 Claptrap Statues

Unlocked: 20 Feb 2011 04:06:21

Knoxx is at rest...finally

Unlocked: 20 Feb 2011 04:04:23

Collect 5 3D glasses

Unlocked: 19 Feb 2011 07:33:08

Reach Level 51

Unlocked: 15 Jan 2011 04:44:26