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