Borderlands Cheats

Down in Front! (Bronze): Killed 15 enemies with the Soldier's action skill
Duel-icious (Bronze): Won a duel against another player
Duelinator (Silver): Won a duel without taking damage
Facemelter (Bronze): Killed 25 enemies with corrosive weapons
Fence (Bronze): Sold 50 guns to a shop
Fully Loaded (Bronze): Rescued enough Claptraps to earn 42 inventory slots
Get A Little Blood on the Tires (Bronze): Killed 25 enemies by ramming them with any vehicle
Group LF Healer (Bronze): Rescued a groupmate from death in a co-op game
Made in Fyrestone (Bronze): Completed all missions in the Arid Badlands
Made in New Haven (Bronze): Completed all missions in the Rust Commons
Master Exploder (Bronze): Killed 25 enemies with explosive weapons
My Brother is an Italian Plumber (Bronze): Killed an enemy plumber-style
Paid in Fyrestone (Bronze): Completed 5 missions in the Arid Badlands
Paid in New Haven (Bronze): Completed 5 missions in the Rust Commons
Pandora-dog Millionaire (Silver): Earned $1,000,000
Pyro (Bronze): Killed 25 enemies with incendiary weapons
Reckless Abandon (Bronze): Killed 15 enemies with the Berserker's action skill
Rootinest, Tootinest, Shootinest (Bronze): Killed 5 Rakk in under 10 seconds
Speedy McSpeederton (Bronze): Race around the Ludicrous Speedway in record time
There are some who call me…Tim (Bronze): Equipped a class mod for your character
There's No "I" In "Team" (Bronze): Completed 15 missions in co-op
Truly Outrageous (Bronze): Killed an enemy with the Siren's action skill
Weapon Aficionado (Bronze): Reached proficiency level 10 with any weapon type
You call this archaeology? (Bronze): Applied an elemental artifact

DLC Trophies
Complete each requirement to receive the Trophies.

Braaaaaaaaaaaaains! (Silver): Completed the "Braaaaaaaaaaaaains!" mission
House of the Ned (Bronze): Completed the "House of the Ned" mission
Jakob's Fodder (Bronze): Completed the "Jakob's Fodder" mission

The Zombie Island of Dr. Ned Trophies
Complete each requirement to receive the Trophies. There are 2 Bronze Trophies, 2 Silver Trophies, and 1 Gold Trophy.

Braaaaaaaaaaaaains! (Silver): Completed the "Braaaaaaaaaaaaains!" mission
House of the Ned (Bronze): Completed the "House of the Ned" mission
Jakobs Fodder (Bronze): Completed the "Jakobs Fodder" mission
Ned's Undead, Baby, Ned's Undead (Gold): Killed Ned. Again
Night of the Living Ned (Silver): Killed Ned...sort of

Mad Moxxi's Underdome Riot Trophies
Complete each requirement to receive the Trophies. There is 1 Bronze Trophy, 3 Silver Trophies, and 1 Gold Trophy.

Big Tournament (Gold): Completed each of the larger challenges in all 3 coliseums
Hell-Burbia (Silver): Completed the larger challenge in the Hell-Burbia coliseum
Small Tournament (Bronze): Completed the lesser challenge in all 3 coliseums
The Angelic Ruins (Silver): Completed the larger challenge in The Angelic Ruins coliseum
The Gully (Silver): Completed the larger challenge in The Gully coliseum

Claptrap's New Robot Revolution Trophies
Bobble-trap (Bronze): Collected 15 Claptrap bobbleheads
It's so realistic (Bronze): Collected 5 3D glasses
Muerte la robo-lucion (Silver): Killed the Interplanetary Ninja Assassin Claptrap
The Collector (Silver): Completed a crazy request for Tannis
The Lubricator (Bronze): Found 25 oil cans
Tourist (Bronze): Found all 6 Claptrap statues
What a party! (Silver): Collected 3 panties, 5 fish in a bag and 15 pizzas

The Secret Armory of General Knoxx Trophies
Complete each requirement to get the specified Trophy.

Athena, Out (Bronze): Rescued Athena
Completionist (Bronze): Completed all missions in Secret Armory
Depot Demolition (Bronze): Destroyed Lance Depot
Ding! Overleveled (Bronze): Reached Level 51
Ding! Overleveled to 11 (Silver): Reached Level 61
Making a Monster (Bronze): Built the New Car: Monster
Sneaky Little Buggers (Bronze): Killed each of the loot midgets
Speed Kills (Bronze): Destroyed a Lancer while in a Racer
Vincible (Silver): Killed Crawmerax the Invincible

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

Easy Way to beat Mad Mel
After entering the arena where Mad Mel is, bandits in vehicles will spawn. Get killed by them. If you passed the autosave point outside the arena, you will respawn there and Mad Mel and the bandits will still be inside the arena. Now you can wait outside the arena and snipe Mad Mel and they will have a hard time hitting you. Use an explosive sniper rifle for more damage.

Borderlands: The Secret Armory of General Knoxx Solo Crawmerax the Invincible with any character
Crawmerax is the secret final boss who you face during the mission You. Will. Die.,which is unlocked from the bounty board after completing the main story. If your character is not strong enough to survive Crawmerax's devastating attacks, there is an easy method to defeating him. After the elevator brings you up, you will see Crawmerax appear in front of you. Run to the left side of the area and drop down onto a small ledge and make your way up to the corner against the high wall and the step up to the main area. From here, Crawmerax and his minions won't be able to attack you. Instead, they will all turn to face you and roar, allowing you to easily target the bright purple weak spots and kill him. It is highly recommended to have a powerful sniper rifle and a method of regenerating ammunition, but it is absolutely necessary to have a rocket launcher with you because the weak point on Crawmerax's back won't be visible from this angle. You will have to aim your rockets at the spikes on his shell so that the weak spot is caught in the explosion. This is also an excellent method to quickly level since killing Crawmerax's minions earns you a considerable amount of experience.