Full list of all 75 Fallout: New Vegas achievements worth 1,655 gamerscore. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 5 DLC packs containing 25 achievements worth 655 Gamerscore.
Completed All or Nothing.
Completed The House Always Wins.
Completed No Gods, No Masters.
Completed Wild Card.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Played the game from start to finish in Hardcore Mode.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed Volare!
Completed G.I. Blues.
Completed Talent Pool.
Completed The Legend of the Star.
Completed Return to Sender.
Got banned from all the Strip's casinos.
Won 30 games of Caravan.
Won 3 games of Caravan.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Played 10 spins of Slots.
Completed Ring-a-Ding-Ding.
Discovered all snow globes.
Picked 50 pockets.
Made 50 Speech challenges.
Recruited all companions.
Hacked 25 terminals.
You Discovered 125 locations.
Healed 10,000 points of damage with Stimpaks.
Healed 10,000 points of damage with food.
Installed 20 weapon mods.
Caused 10,000 damage with Explosives.
Caused 10,000 damage with Energy Weapons.
Completed They Went That-a-Way.
Caused 10,000 damage with Unarmed weapons.
Completed Come Fly With Me.
Discovered 50 locations.
Picked 25 locks.
Caused 10,000 damage with Melee Weapons.
Caused 10,000 damage with Guns.
Recruited a companion.
Sold 10,000 caps worth of goods.
Reached 30th level.
Reached 20th level.
Completed That Lucky Old Sun.
Reached 10th level.
Crafted 20 items.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
Confronted Father Elijah in the Sierra Madre's Vault.
Trapped Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Recruited Dean Domino, Christine and Dog.
Collected 500 Sierra Madre Chips.
Evacuated Zion.
Crushed the White Legs.
Scouted the Zion Valley for signs of the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-13 cardiac regulator sneaky suit!
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Reactivated all of the Sink's robotic assistants.
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
Found all of ED-E's upgrades in the Divide.
Acquired all upgrades for the Divide's signature weapon.
Decided the fate of all the Divide dwellers.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.