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.
Reached level 50.
Reached level 10.
Reached level 25.
Reached level 5.
Discovered all named locations.
Got an item from Michael Mamaril.
Completed all side missions.
Purchased 5 items from the black market.
Gunzerked continuously for 90 seconds.
Remained in Zero's Decepti0n mode for ten seconds straight.
Killed 100 enemies with the Sabre turret.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Discovered all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve.
Completed Round 5 of any Circle of Slaughter.
Allowed a goliath to level up four times before killing him.
Killed Donkey Mong.
Tipped Moxxi $10,000.
Gave Claptrap a high five.
Killed a Constructor without it ever building another bot.
Revived someone from "Fight for Your Life!" that is on your friends list.
Phaselocked 100 enemies.
Redeemed 25 tokens.
Completed 20 side missions.
Killed a Chubby.
Killed a flying enemy with a thrown Tediore weapon.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.
Unlocked 10 customization items.
Had Purple-rated gear or better equipped in every slot.
Completed thy quest by rescuing yonder queen.
Introduced thyself to the White Knight.
Slew Mister Boney Pants Guy.
Unsheathed 5 swords from Immortal Skeletaurs without leaving the area.
Demonstrated your skill, or lack thereof, at rolling the magical treasure orb of many sides.
Vanquished the Ancient Dragons of Destruction.
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.
Won the most challenging round in Murderlin's Temple.
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 all Campaign of Carnage side missions.
Completed the mission "Long Way To The Top".
Collected 10 pictures of Moxxi in Campaign of Carnage.
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".