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.
Killed Donkey Mong.
Killed a flying enemy with a thrown Tediore weapon.
Reached level 50.
Remained in Zero's Decepti0n mode for ten seconds straight.
Discovered all named locations.
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.
Completed Round 5 of any Circle of Slaughter.
Gave Claptrap a high five.
Discovered all named locations in Sanctuary, Opportunity, and Lynchwood.
Reached level 25.
Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon.
Killed a Chubby.
Had Purple-rated gear or better equipped in every slot.
Purchased 5 items from the black market.
Tipped Moxxi $10,000.
Killed a Constructor without it ever building another bot.
Completed 20 side missions.
Revived someone from "Fight for Your Life!" that is on your friends list.
Redeemed 25 tokens.
Allowed a goliath to level up four times before killing him.
Reached level 10.
Reached level 5.
Unlocked 10 customization items.
Completed level 1 of all non-level-specific challenges with a single character.
Killed 100 enemies with the Sabre turret.
Phaselocked 100 enemies.
Got an item from Michael Mamaril.
Completed all side missions.
Wielded the Mysterious Amulet.
Won the most challenging round in Murderlin's Temple.
Demonstrated your skill, or lack thereof, at rolling the magical treasure orb of many sides.
Vanquished the Ancient Dragons of Destruction.
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.
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".
Completed all Campaign of Carnage side missions.
Completed the mission "Long Way To The Top".
Collected 10 pictures of Moxxi in Campaign of Carnage.
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.
Complete the mission "Paradise Found".
Activate the Backburner's firewall.
Allow Tiny Tina to arm the moonshot cannon.
Defeat Haderax the Invincible.