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