Borderlands Cheats

Rootinest, Tootinest, Shootinest(10): Kill 5 Rakk in under 10 seconds
Pandora-dog Millionaire(50): Earn $1,000,000
Fence(25): Sell 50 guns to a shop
Can't We Get BEYOND Thunderdome?(25): Win an arena match
Duel-icious(15): Win a duel against another player
Group LF Healer(25): Rescue a groupmate from death in a co-op game
There's No "I" In "Team"(30): Complete 15 missions in co-op
And They'll Tell Two Friends(10): Play in a co-op game with either an employee of Gearbox or someone who has this achievement
Weapon Aficionado(20): Reach proficiency level 10 with any weapon type
Duelinator(35): Win a duel without taking damage
Facemelter(25): Kill 25 enemies with corrosive weapons
1.21 Gigawatts(25): Kill 25 enemies with shock weapons
Pyro(25): Kill 25 enemies with incendiary weapons
Master Exploder(15): Kill 25 enemies with explosive weapons
There are some who call me...Tim(25): Equip a class mod for your character
Fully Loaded(10): Rescue enough Claptraps to earn 42 inventory slots
Truly Outrageous(15): Kill an enemy with the Siren's action skill
Careful, He Bites(15): Kill 15 enemies with the Hunter's action skill
Reckless Abandon(15): Kill 15 enemies with the Berserker's action skill
Down in Front!(15): Kill 15 enemies with the Soldier's action skill
Secret Achievement(30): Continue playing to unlock this secret achievement
Secret Achievement(10): Continue playing to unlock this secret achievement
Secret Achievement(20): Continue playing to unlock this secret achievement
Secret Achievement(30): Continue playing to unlock this secret achievement
Secret Achievement(40): Continue playing to unlock this secret achievement
Secret Achievement(50): Continue playing to unlock this secret achievement
Secret Achievement(35): Continue playing to unlock this secret achievement
Secret Achievement(15): Continue playing to unlock this secret achievement

The Zombie Island of Dr. Ned Achievements
Complete each achievement to receive the allotted gamerscore.

Braaaaaaaaaaaaains! (25): Complete the "Braaaaaaaaaaaaains!" mission
House of the Ned (25): Complete the "House of the Ned" mission
Jakobs Fodder (25): Complete the "Jakobs Fodder" mission
Ned's Undead, Baby (49): Killed Ned. Again.
Night of the Living Ned (1): Killed Ned...sort of

Mad Moxxi's Underdome Riot Achievements
Complete each achievement to receive the specified gamerscore.

Big Tournament (40G): Reach the end of each of the 3 larger challenges with one character.
Hell-Burbia (25G): Reach the end of the larger challenge in the Hell-Burbia colliseum.
Small Tournament (10G): Complete the Prove Yourself Mission
The Angellic Ruins (25G): Reach the end of the larger challenge in The Angellic Ruins colliseum.
The Gully (25G): Reach the end of the larger challenge in The Gully colliseum.

The Secret Armory of General Knoxx DLC Achievements
Complete each achievement to receive the allotted gamerscore.

Athena, Out(25): Rescue Athena
Completionist(25): Complete all missions in Secret Armory
Depot Demolition(25): Destroy the Lance Depot
Ding! Overleveled to 11 (40): Reach Level 61
Ding! Overleveled(15): Reach Level 51
Making a Monster(10): Build the New Car: Monster
Sneaky Little Buggers(25): Kill each of the loot midgets
Speed Kills(25): Destroy a Lancer While in a Racer
Vincible(50): Kill Crawmerax the Invincible

Claptrap's New Robot Revolution Achievements
Bobble-Trap (10): Collect 15 claptrap bobbleheads
It's so realistic! (10): Collect 5 3D glasses
Muerte la robo-lución (70): Kill the INAC
The Collector (50): Complete a crazy request for Tannis
The Lubricator (10): Find 25 oil cans
Tourist (10): Find all 6 Claptrap Statues
What a party! (30): Collect 3 panties, 5 fish in a bag, and 15 pizzas

New Game +
Complete the game one time to unlock New Game +. All the enemies are super powerful on this playthrough.