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