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