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