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 Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed All or Nothing.
Completed The House Always Wins.
Healed 10,000 points of damage with food.
Won 30 games of Caravan.
Picked 50 pockets.
Played 10 spins of Roulette.
You Discovered 125 locations.
Caused 10,000 damage with Explosives.
Completed Return to Sender.
Installed 20 weapon mods.
Discovered all snow globes.
Recruited all companions.
Played 10 spins of Slots.
Completed The Legend of the Star.
Played the game from start to finish in Hardcore Mode.
Completed No Gods, No Masters.
Completed Wild Card.
Won 3 games of Caravan.
Caused 10,000 damage with Unarmed weapons.
Got banned from all the Strip's casinos.
Caused 10,000 damage with Melee Weapons.
Reached 30th level.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Healed 10,000 points of damage with Stimpaks.
Completed Talent Pool.
Picked 25 locks.
Played 10 hands of Blackjack.
Caused 10,000 damage with Energy Weapons.
Hacked 25 terminals.
Completed That Lucky Old Sun.
Sold 10,000 caps worth of goods.
Reached 20th level.
Completed Ring-a-Ding-Ding.
Made 50 Speech challenges.
Completed Volare!
Caused 10,000 damage with Guns.
Discovered 50 locations.
Completed G.I. Blues.
Reached 10th level.
Crafted 20 items.
Completed Come Fly With Me.
Completed They Went That-a-Way.
Recruited a companion.
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.
Collected 500 Sierra Madre Chips.
Recruited Dean Domino, Christine and Dog.
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.
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.
Decided the fate of all the Divide dwellers.
Find all of ED-E's upgrades in the Divide.
Acquire all upgrades for the Divide's signature weapon.
Detonate all of the warheads in the Divide.
Cause 10,000 damage with unique Mojave Wasteland weapons.
Cause 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Complete any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Complete any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Complete any three Gun Runners' Arsenal (GRA) three star (***) Challenges.