Full list of all 75 Borderlands 2 achievements. It takes around 150-200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 5 DLC packs containing 25 achievements.
Remained in Zero's Decepti0n mode for ten seconds straight.
Completed level 1 of all non-level-specific challenges with a single character.
Phaselocked 100 enemies.
Completed all side missions.
Discovered all named locations.
Reached level 50.
Killed Donkey Mong.
Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.
Got an item from Michael Mamaril.
Killed 100 enemies with the Sabre turret.
Had Purple-rated gear or better equipped in every slot.
Discovered all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve.
Completed Round 5 of any Circle of Slaughter.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Revived someone from "Fight for Your Life!" that is on your friends list.
Gunzerked continuously for 90 seconds.
Killed a Chubby.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Allowed a goliath to level up four times before killing him.
Gave Claptrap a high five.
Redeemed 25 tokens.
Killed a flying enemy with a thrown Tediore weapon.
Killed a Constructor without it ever building another bot.
Unlocked 10 customization items.
Reached level 25.
Completed 20 side missions.
Purchased 5 items from the black market.
Tipped Moxxi $10,000.
Reached level 10.
Reached level 5.
Wielded the Mysterious Amulet.
Won the most challenging round in Murderlin's Temple.
Demonstrated your skill, or lack thereof, at rolling the magical treasure orb of many sides.
Vanquished the Ancient Dragons of Destruction.
Fed thy noble queen 3 times during one visit to her quarters.
Completed thy quest by rescuing yonder queen.
Showed thine worst enemy, the abomination known as "The Darkness", who is the nerdiest of them all.
Unsheathed 5 swords from Immortal Skeletaurs without leaving the area.
Introduced thyself to the White Knight.
Slew Mister Boney Pants Guy.
Completed all Hammerlock's Hunt side missions.
Completed the mission "The Fall of Nakayama".
Discovered all named locations in Hammerlock's Hunt.
Completed all Campaign of Carnage side missions.
Completed the mission "Long Way To The Top".
Collected 10 pictures of Moxxi in Campaign of Carnage.
Completed all Pirate's Booty side missions.
Discovered all named locations in Oasis and the surrounding Pirate's Booty zones.
Completed the mission "X Marks the Spot".
Defeat Haderax the Invincible.
Complete the mission "Paradise Found".
Defeat the Dark Web.
Allow Tiny Tina to arm the moonshot cannon.
Activate the Backburner's firewall.