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 All or Nothing.
Completed The House Always Wins.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Picked 50 pockets.
Got banned from all the Strip's casinos.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Installed 20 weapon mods.
Completed Return to Sender.
Reached 30th level.
Hacked 25 terminals.
Made 50 Speech challenges.
Completed The Legend of the Star.
Caused 10,000 damage with Explosives.
Healed 10,000 points of damage with food.
Caused 10,000 damage with Unarmed weapons.
Caused 10,000 damage with Melee Weapons.
You Discovered 125 locations.
Recruited all companions.
Discovered all snow globes.
Completed Volare!
Healed 10,000 points of damage with Stimpaks.
Completed Talent Pool.
Reached 20th level.
Caused 10,000 damage with Energy Weapons.
Completed G.I. Blues.
Completed That Lucky Old Sun.
Completed No Gods, No Masters.
Completed Wild Card.
Discovered 50 locations.
Picked 25 locks.
Sold 10,000 caps worth of goods.
Won 3 games of Caravan.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Played 10 hands of Blackjack.
Completed Ring-a-Ding-Ding.
Caused 10,000 damage with Guns.
Reached 10th level.
Completed They Went That-a-Way.
Recruited a companion.
Completed Come Fly With Me.
Crafted 20 items.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
Win 30 games of Caravan.
Play the game from start to finish in Hardcore Mode.
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.
Reactivated all of the Sink's robotic assistants.
Recovered X-13 cardiac regulator sneaky suit!
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
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) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) three 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.