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.
Gunzerked continuously for 90 seconds.
Remained in Zero's Decepti0n mode for ten seconds straight.
Had Purple-rated gear or better equipped in every slot.
Got an item from Michael Mamaril.
Killed 100 enemies with the Sabre turret.
Completed level 1 of all non-level-specific challenges with a single character.
Discovered all named locations.
Completed all side missions.
Reached level 50.
Killed Donkey Mong.
Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.
Discovered all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Completed Round 5 of any Circle of Slaughter.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Killed a Constructor without it ever building another bot.
Reached level 25.
Killed a Chubby.
Tipped Moxxi $10,000.
Unlocked 10 customization items.
Completed 20 side missions.
Phaselocked 100 enemies.
Gave Claptrap a high five.
Redeemed 25 tokens.
Killed a flying enemy with a thrown Tediore weapon.
Purchased 5 items from the black market.
Reached level 10.
Allowed a goliath to level up four times before killing him.
Revived someone from "Fight for Your Life!" that is on your friends list.
Reached level 5.
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.
Fed thy noble queen 3 times during one visit to her quarters.
Demonstrated your skill, or lack thereof, at rolling the magical treasure orb of many sides.
Vanquished the Ancient Dragons of Destruction.
Introduced thyself to the White Knight.
Completed thy quest by rescuing yonder queen.
Unsheathed 5 swords from Immortal Skeletaurs without leaving the area.
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".
Completed all Campaign of Carnage side missions.
Collected 10 pictures of Moxxi in Campaign of Carnage.
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".
Allow Tiny Tina to arm the moonshot cannon.
Defeat Haderax the Invincible.
Defeat the Dark Web.
Complete the mission "Paradise Found".
Activate the Backburner's firewall.