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.
Played the game from start to finish in Hardcore Mode.
Healed 10,000 points of damage with food.
Completed No Gods, No Masters.
Completed Wild Card.
Installed 20 weapon mods.
Picked 50 pockets.
Won 30 games of Caravan.
Won 3 games of Caravan.
Completed The Legend of the Star.
Hacked 25 terminals.
Caused 10,000 damage with Explosives.
Recruited all companions.
Caused 10,000 damage with Unarmed weapons.
Got banned from all the Strip's casinos.
Healed 10,000 points of damage with Stimpaks.
You Discovered 125 locations.
Caused 10,000 damage with Energy Weapons.
Reached 30th level.
Caused 10,000 damage with Guns.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed All or Nothing.
Completed The House Always Wins.
Discovered all snow globes.
Caused 10,000 damage with Melee Weapons.
Sold 10,000 caps worth of goods.
Picked 25 locks.
Reached 20th level.
Completed Return to Sender.
Discovered 50 locations.
Completed Talent Pool.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Completed That Lucky Old Sun.
Made 50 Speech challenges.
Played 10 spins of Slots.
Completed Veni, Vidi, Vici.
Repaired 30 items.
Played 10 hands of Blackjack.
Played 10 spins of Roulette.
Completed Volare!
Reached 10th level.
Completed Ring-a-Ding-Ding.
Recruited a companion.
Completed G.I. Blues.
Crafted 20 items.
Completed They Went That-a-Way.
Completed Come Fly With Me.
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.
Collected 500 Sierra Madre Chips.
Completed the Sierra Madre Gala Event.
Recruited Dean Domino, Christine and Dog.
Arrived at Zion.
Resupplied Daniel and the Sorrows.
Evacuated Zion.
Crushed the White Legs.
Scouted the Zion Valley for signs of the White Legs.
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Completed Lonesome Road.
Acquired all upgrades for the Divide's signature weapon.
Found all of ED-E's upgrades in the Divide.
Detonated all of the warheads 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.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.