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 3 games of Caravan.
Won 30 games of Caravan.
Got banned from all the Strip's casinos.
Played the game from start to finish in Hardcore Mode.
Picked 50 pockets.
Completed The Legend of the Star.
Healed 10,000 points of damage with food.
Healed 10,000 points of damage with Stimpaks.
Installed 20 weapon mods.
Hacked 25 terminals.
Caused 10,000 damage with Melee Weapons.
Caused 10,000 damage with Explosives.
Completed Eureka!
Completed For the Republic.
Completed No Gods, No Masters.
Completed Wild Card.
Completed Talent Pool.
Completed All or Nothing.
Completed The House Always Wins.
Completed You'll Know It When It Happens.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Reached 30th level.
Completed Arizona Killer.
Discovered all snow globes.
Completed Ring-a-Ding-Ding.
Completed Volare!
You Discovered 125 locations.
Recruited all companions.
Made 50 Speech challenges.
Caused 10,000 damage with Energy Weapons.
Completed G.I. Blues.
Caused 10,000 damage with Unarmed weapons.
Sold 10,000 caps worth of goods.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Played 10 spins of Slots.
Reached 20th level.
Completed Return to Sender.
Completed They Went That-a-Way.
Discovered 50 locations.
Crafted 20 items.
Recruited a companion.
Reached 10th level.
Completed Come Fly With Me.
Picked 25 locks.
Completed That Lucky Old Sun.
Caused 10,000 damage with Guns.
Repaired 30 items.
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.
Recruited Dean Domino, Christine and Dog.
Collected 500 Sierra Madre Chips.
Evacuated Zion.
Crushed the White Legs.
Scouted the Zion Valley for signs of the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Completed Lonesome Road.
Detonated all of the warheads in the Divide.
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) three star (***) Challenges.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.