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.
Completed For the Republic.
Completed Render Unto Caesar.
Completed Veni, Vidi, Vici.
Completed Eureka!
Completed Arizona Killer.
Recruited all companions.
Discovered all snow globes.
Completed Talent Pool.
Got banned from all the Strip's casinos.
Won 30 games of Caravan.
Healed 10,000 points of damage with food.
Crafted 20 items.
Completed Ain't That a Kick in the Head.
Recruited a companion.
Caused 10,000 damage with Guns.
Repaired 30 items.
Reached 10th level.
Discovered 50 locations.
Picked 25 locks.
Sold 10,000 caps worth of goods.
Completed They Went That-a-Way.
Completed Come Fly With Me.
Completed That Lucky Old Sun.
Reached 20th level.
Completed Ring-a-Ding-Ding.
Completed Return to Sender.
Installed 20 weapon mods.
You Discovered 125 locations.
Played 10 hands of Blackjack.
Reached 30th level.
Caused 10,000 damage with Energy Weapons.
Healed 10,000 points of damage with Stimpaks.
Played 10 spins of Slots.
Played 10 spins of Roulette.
Made 50 Speech challenges.
Completed G.I. Blues.
Completed Volare!
Completed The Legend of the Star.
Hacked 25 terminals.
Completed The House Always Wins.
Completed All or Nothing.
Completed You'll Know It When It Happens.
Caused 10,000 damage with Explosives.
Caused 10,000 damage with Melee Weapons.
Won 3 games of Caravan.
Played the game from start to finish in Hardcore Mode.
Completed Wild Card.
Completed No Gods, No Masters.
Caused 10,000 damage with Unarmed weapons.
Trapped Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Confronted Father Elijah in the Sierra Madre's Vault.
Recruited Dean Domino, Christine and Dog.
Collected 500 Sierra Madre Chips.
Evacuated Zion.
Scouted the Zion Valley for signs of the White Legs.
Crushed the White Legs.
Arrived at Zion.
Resupplied Daniel and the Sorrows.
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Made up your mind... about your brain.
Completed Old World Blues.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Acquired all upgrades for the Divide's signature weapon.
Found all of ED-E's upgrades in the Divide.
Decided the fate of all the Divide dwellers.
Completed Lonesome Road.
Detonated all of the warheads 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.