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.
Won 30 games of Caravan.
Completed The Legend of the Star.
Healed 10,000 points of damage with food.
Installed 20 weapon mods.
Picked 50 pockets.
Got banned from all the Strip's casinos.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed All or Nothing.
Completed The House Always Wins.
Caused 10,000 damage with Explosives.
Hacked 25 terminals.
You Discovered 125 locations.
Healed 10,000 points of damage with Stimpaks.
Reached 10th level.
Picked 25 locks.
Played 10 spins of Roulette.
Completed They Went That-a-Way.
Completed G.I. Blues.
Reached 20th level.
Recruited a companion.
Discovered 50 locations.
Sold 10,000 caps worth of goods.
Caused 10,000 damage with Energy Weapons.
Won 3 games of Caravan.
Completed Come Fly With Me.
Completed Eureka!
Caused 10,000 damage with Melee Weapons.
Completed For the Republic.
Reached 30th level.
Played 10 hands of Blackjack.
Completed Return to Sender.
Discovered all snow globes.
Recruited all companions.
Caused 10,000 damage with Unarmed weapons.
Completed No Gods, No Masters.
Caused 10,000 damage with Guns.
Completed Wild Card.
Completed You'll Know It When It Happens.
Played 10 spins of Slots.
Completed Talent Pool.
Completed Volare!
Completed That Lucky Old Sun.
Made 50 Speech challenges.
Completed Ring-a-Ding-Ding.
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-8 vertebrae-pulse-de-sensitizer frequency!
Recovered X-13 cardiac regulator sneaky suit!
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
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) two star (**) Challenges.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.