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