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