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