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