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.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Healed 10,000 points of damage with Stimpaks.
Caused 10,000 damage with Explosives.
Healed 10,000 points of damage with food.
Completed The Legend of the Star.
Completed Talent Pool.
Caused 10,000 damage with Melee Weapons.
Won 30 games of Caravan.
Completed Eureka!
Completed For the Republic.
Completed No Gods, No Masters.
Completed Wild Card.
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.
Recruited all companions.
Discovered all snow globes.
Caused 10,000 damage with Unarmed weapons.
Hacked 25 terminals.
Completed Return to Sender.
Completed Ring-a-Ding-Ding.
Reached 30th level.
Completed G.I. Blues.
Completed Volare!
Completed They Went That-a-Way.
Made 50 Speech challenges.
You Discovered 125 locations.
Reached 20th level.
Completed Come Fly With Me.
Installed 20 weapon mods.
Completed That Lucky Old Sun.
Caused 10,000 damage with Energy Weapons.
Discovered 50 locations.
Caused 10,000 damage with Guns.
Sold 10,000 caps worth of goods.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Played 10 spins of Slots.
Picked 25 locks.
Reached 10th level.
Recruited a companion.
Repaired 30 items.
Crafted 20 items.
Won 3 games of Caravan.
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.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
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.
Found all of ED-E's upgrades in the Divide.
Completed Lonesome Road.
Detonated all of the warheads in the Divide.
Decided the fate of all the Divide dwellers.
Acquired all upgrades for the Divide's signature weapon.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Caused 10,000 damage with unique Mojave Wasteland weapons.
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.