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