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.
Completed all side missions.
Remained in Zero's Decepti0n mode for ten seconds straight.
Gunzerked continuously for 90 seconds.
Reached level 50.
Allowed a goliath to level up four times before killing him.
Discovered all named locations.
Completed Round 5 of any Circle of Slaughter.
Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.
Had Purple-rated gear or better equipped in every slot.
Killed Donkey Mong.
Killed 100 enemies with the Sabre turret.
Got an item from Michael Mamaril.
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.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Reached level 25.
Killed a Chubby.
Phaselocked 100 enemies.
Killed a Constructor without it ever building another bot.
Killed a flying enemy with a thrown Tediore weapon.
Purchased 5 items from the black market.
Tipped Moxxi $10,000.
Completed 20 side missions.
Redeemed 25 tokens.
Gave Claptrap a high five.
Reached level 10.
Unlocked 10 customization items.
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.
Wielded the Mysterious Amulet.
Fed thy noble queen 3 times during one visit to her quarters.
Completed thy quest by rescuing yonder queen.
Showed thine worst enemy, the abomination known as "The Darkness", who is the nerdiest of them all.
Introduced thyself to the White Knight.
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.
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".
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".
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".