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