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