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