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