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