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