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.
Picked 50 pockets.
Caused 10,000 damage with Unarmed weapons.
Caused 10,000 damage with Melee Weapons.
Played the game from start to finish in Hardcore Mode.
Caused 10,000 damage with Explosives.
Healed 10,000 points of damage with Stimpaks.
Installed 20 weapon mods.
Hacked 25 terminals.
Completed The Legend of the Star.
Won 30 games of Caravan.
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.
Reached 30th level.
Got banned from all the Strip's casinos.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Completed Talent Pool.
Completed Return to Sender.
Discovered all snow globes.
You Discovered 125 locations.
Recruited all companions.
Completed G.I. Blues.
Completed Volare!
Made 50 Speech challenges.
Reached 20th level.
Caused 10,000 damage with Guns.
Caused 10,000 damage with Energy Weapons.
Discovered 50 locations.
Picked 25 locks.
Played 10 hands of Blackjack.
Completed Ring-a-Ding-Ding.
Completed They Went That-a-Way.
Crafted 20 items.
Completed That Lucky Old Sun.
Reached 10th level.
Recruited a companion.
Won 3 games of Caravan.
Sold 10,000 caps worth of goods.
Completed Come Fly With Me.
Repaired 30 items.
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-13 cardiac regulator sneaky suit!
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
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 any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Caused 10,000 damage with unique Mojave Wasteland weapons.