Serialchiller

Combine Upgrade both slots of a weapon in the Single Player Campaign

Tourist Found all 6 Claptrap statues

The Hunters Became the Hunted Kill the Doom Hunters

Those! Completed "Those!"

Finding the Garden of Eden Completed "Finding the Garden of Eden"

The American Dream Completed "The American Dream"

Ding! Overleveled to 11 Reached Level 61

Impaled Kill an Impaler

George Washington Bridge Successfully complete level 3

Take it Back! Completed "Take it Back!"

Axed Kill 50 Chimera with Riley's axe in the Single Player Campaign

Deadly Kill 500 Chimera in the Single Player Campaign

Rescue from Paradise Completed "Rescue from Paradise"

Psychotic Prankster Placed a grenade or mine while pickpocketing

Sand Apprentice Kill 150 enemies

Indiscriminate Kill an enemy with every weapon in the Single Player Campaign

Boom Kill 100 Chimera with headshots in the Single Player Campaign

Xenocide Kill 1000 enemies in the single player Campaign.

Ellis Island Successfully complete level 4

“The ‘I’ in Team” - Rescuer Rescued the Little Sister in “The ‘I’ in Team”

Flyswatter Defeat the swarm in the single player Campaign.

Ambassador of Peace Reached Level 14 with Good Karma

Retirement just got postponed. Campaign: finish Cold War

Small Tournament Completed the lesser challenge in all 3 coliseums

This One's my Favorite Complete a Praetor Suit Perk category in a single save slot

Protection Camp Successfully complete level 5

Assault Rifle Aggression Campaign: 50 kills with assault rifles

Variety Use the secondary fire of each weapon in the Single Player Campaign

Tenpenny Tower Completed "Tenpenny Tower"

Keys are for Cowards Picked 50 locks

Lethal Kill 1000 Chimera in the Single Player Campaign

G-man Kill Gorrell

Conversion Tower Successfully complete level 6

Inhuman Kill the Leviathan

Sword of Strength Obtain the first sword

New Shiny Gun Campaign: find 5 collectable weapons

Customize Upgrade all weapons in the Single Player Campaign

Link to the Past Campaign: destroy 1 satellite uplink

Overheat Kill 50 Chimera by detonating their heatstacks in the Single Player Campaign

Stealing Independence Completed "Stealing Independence"

It's bad for my karma man! Campaign: finish Heart of Darkness

The Superhuman Gambit Completed "The Superhuman Gambit"

Destruction Campaign: destroy 100 objects

The Bigger They Are Defeat the Leviathan in the single player Campaign.

Demolish Campaign: demolish 1 house

Vincible Killed Crawmerax the Invincible

Speed Demon Achieve a speed of 300km/h.

They got all your intel? Campaign: finish Upriver

Giant Kill any combination of 18 Impalers or Executioners

Trouble on the Homefront Completed "Trouble on the Homefront"