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