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.
Won 30 games of Caravan.
Got banned from all the Strip's casinos.
Completed The Legend of the Star.
Caused 10,000 damage with Unarmed weapons.
Caused 10,000 damage with Melee Weapons.
Healed 10,000 points of damage with food.
Recruited all companions.
Picked 50 pockets.
Made 50 Speech challenges.
Completed Return to Sender.
Won 3 games of Caravan.
Hacked 25 terminals.
Completed Talent Pool.
Played the game from start to finish in Hardcore Mode.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Reached 30th level.
Picked 25 locks.
Played 10 spins of Slots.
Installed 20 weapon mods.
Discovered all snow globes.
Caused 10,000 damage with Energy Weapons.
Completed Render Unto Caesar.
Completed Veni, Vidi, Vici.
Completed Arizona Killer.
You Discovered 125 locations.
Completed That Lucky Old Sun.
Crafted 20 items.
Caused 10,000 damage with Explosives.
Repaired 30 items.
Played 10 spins of Roulette.
Completed No Gods, No Masters.
Discovered 50 locations.
Reached 20th level.
Recruited a companion.
Caused 10,000 damage with Guns.
Healed 10,000 points of damage with Stimpaks.
Completed Wild Card.
Completed All or Nothing.
Played 10 hands of Blackjack.
Reached 10th level.
Sold 10,000 caps worth of goods.
Completed They Went That-a-Way.
Completed Ring-a-Ding-Ding.
Completed The House Always Wins.
Completed Come Fly With Me.
Completed G.I. Blues.
Completed Volare!
Completed Ain't That a Kick in the Head.
Confronted Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Trapped Father Elijah in the Sierra Madre's Vault.
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-8 vertebrae-pulse-de-sensitizer frequency!
Recovered X-13 cardiac regulator sneaky suit!
Acquired all upgrades for the Divide's signature weapon.
Completed Lonesome Road.
Detonated all of the warheads in the Divide.
Found all of ED-E's upgrades in the Divide.
Decided the fate of all the Divide dwellers.
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 Gun Runners' Arsenal (GRA) Weapons.
Caused 10,000 damage with unique Mojave Wasteland weapons.