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.
Won 3 games of Caravan.
Hacked 25 terminals.
Got banned from all the Strip's casinos.
Picked 50 pockets.
Completed The Legend of the Star.
Completed Return to Sender.
Picked 25 locks.
Completed No Gods, No Masters.
Completed Talent Pool.
Completed Eureka!
Completed For the Republic.
Caused 10,000 damage with Explosives.
Recruited all companions.
Caused 10,000 damage with Energy Weapons.
Completed G.I. Blues.
Completed Wild Card.
Completed Veni, Vidi, Vici.
Caused 10,000 damage with Melee Weapons.
Completed Render Unto Caesar.
Completed Arizona Killer.
Played the game from start to finish in Hardcore Mode.
Completed All or Nothing.
Completed The House Always Wins.
Healed 10,000 points of damage with food.
You Discovered 125 locations.
Discovered all snow globes.
Healed 10,000 points of damage with Stimpaks.
Repaired 30 items.
Completed You'll Know It When It Happens.
Made 50 Speech challenges.
Completed Volare!
Caused 10,000 damage with Guns.
Installed 20 weapon mods.
Discovered 50 locations.
Completed Ring-a-Ding-Ding.
Played 10 spins of Slots.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Completed They Went That-a-Way.
Recruited a companion.
Completed Come Fly With Me.
Crafted 20 items.
Caused 10,000 damage with Unarmed weapons.
Reached 10th level.
Reached 20th level.
Reached 30th level.
Completed That Lucky Old Sun.
Sold 10,000 caps worth of goods.
Completed Ain't That a Kick in the Head.
Confronted Father Elijah in the Sierra Madre's Vault.
Trapped Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Collected 500 Sierra Madre Chips.
Recruited Dean Domino, Christine and Dog.
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.
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.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Caused 10,000 damage with unique Mojave Wasteland weapons.