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