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.
Completed level 1 of all non-level-specific challenges with a single character.
Got an item from Michael Mamaril.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Discovered all named locations.
Gave Claptrap a high five.
Allowed a goliath to level up four times before killing him.
Gunzerked continuously for 90 seconds.
Remained in Zero's Decepti0n mode for ten seconds straight.
Phaselocked 100 enemies.
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.
Killed a Chubby.
Completed all side missions.
Had Purple-rated gear or better equipped in every slot.
Killed Donkey Mong.
Reached level 50.
Killed a flying enemy with a thrown Tediore weapon.
Revived someone from "Fight for Your Life!" that is on your friends list.
Purchased 5 items from the black market.
Redeemed 25 tokens.
Killed 100 enemies with the Sabre turret.
Tipped Moxxi $10,000.
Unlocked 10 customization items.
Reached level 10.
Reached level 25.
Completed Round 5 of any Circle of Slaughter.
Completed 20 side missions.
Killed a Constructor without it ever building another bot.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Reached level 5.
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.
Won the most challenging round in Murderlin's Temple.
Vanquished the Ancient Dragons of Destruction.
Wielded the Mysterious Amulet.
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.
Discovered all named locations in Hammerlock's Hunt.
Completed all Hammerlock's Hunt side missions.
Completed the mission "The Fall of Nakayama".
Completed all Campaign of Carnage side missions.
Collected 10 pictures of Moxxi in Campaign of Carnage.
Completed the mission "Long Way To The Top".
Discovered all named locations in Oasis and the surrounding Pirate's Booty zones.
Completed all Pirate's Booty side missions.
Completed the mission "X Marks the Spot".
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".