Gunzerk continuously for 90 seconds
Kill 100 enemies with the Sabre turret
Phaselock 100 enemies
Vanquish the Ancient Dragons of Destruction
Discover all named locations
Discover all named locations in Oasis and the surrounding Pirate's Booty zones
Discover all named locations in Three Horns, Tundra Express, and Frostburn Canyon
Discover all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron
Kill Donkey Mong
Win the most challenging round in Murderlin's Temple
Complete all Campaign of Carnage side missions
Complete all Pirate's Booty side missions
Complete level 1 of all non-level-specific challenges with a single character
Complete all Hammerlock's Hunt side missions
Complete the mission "The Fall of Nakayama"
Wield the Mysterious Amulet
Show thine worst enemy, the abomination known as "The Darkness," who is the nerdiest of them all
Feed thy noble queen 3 times during one visit to her quarters
Complete thy quest by rescuing yonder queen
Demonstrate your skill, or lack thereof, at rolling the magical treasure orb of many sides
Unsheath 5 swords from Immortal Skeletaurs without leaving the area
Introduce thyself to the White Knight
Slay Mister Boney Pants Guy
Revive someone from "Fight for Your Life!" that is on your friends list
Complete all side missions
Continue playing to unlock this secret achievement.
Discover all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve
Remain in Zero's Deception mode for ten seconds straight
Collect 10 pictures of Moxxi in Campaign of Carnage
Kill a Chubby
Reach level 50
Complete the mission "Long Way To The Top"
Allow a Goliath to level up four times before killing him
Discover all named locations in Sanctuary, Opportunity, and Lynchwood
Tip Moxxi $10,000
Kill a flying enemy with a thrown Tediore weapon
Get an item from Michael Mamaril
Give Claptrap a high five
Reach level 25
Complete Round 5 of any Circle of Slaughter
Kill a Constructor without it ever building another bot
Complete 20 side missions
Purchase 5 items from the black market
Redeem 25 tokens
Reach level 10
Unlock 10 customization items
Reach level 5
Have Purple-rated gear or better equipped in every slot
Complete the mission "X Marks the Spot"
Discover all named locations in Hammerlock's Hunt