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