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