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.
Had Purple-rated gear or better equipped in every slot.
Completed level 1 of all non-level-specific challenges with a single character.
Remained in Zero's Decepti0n mode for ten seconds straight.
Killed Donkey Mong.
Gunzerked continuously for 90 seconds.
Discovered all named locations.
Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.
Discovered all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Completed all side missions.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Got an item from Michael Mamaril.
Reached level 50.
Completed Round 5 of any Circle of Slaughter.
Killed a Chubby.
Reached level 25.
Tipped Moxxi $10,000.
Killed a Constructor without it ever building another bot.
Purchased 5 items from the black market.
Phaselocked 100 enemies.
Killed 100 enemies with the Sabre turret.
Gave Claptrap a high five.
Completed 20 side missions.
Redeemed 25 tokens.
Revived someone from "Fight for Your Life!" that is on your friends list.
Unlocked 10 customization items.
Allowed a goliath to level up four times before killing him.
Reached level 10.
Reached level 5.
Killed a flying enemy with a thrown Tediore weapon.
Showed thine worst enemy, the abomination known as "The Darkness", who is the nerdiest of them all.
Won the most challenging round in Murderlin's Temple.
Wielded the Mysterious Amulet.
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.
Demonstrated your skill, or lack thereof, at rolling the magical treasure orb of many sides.
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.
Collected 10 pictures of Moxxi in Campaign of Carnage.
Completed all Campaign of Carnage side missions.
Completed the mission "Long Way To The Top".
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 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.