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.
Crafted 20 items.
Recruited a companion.
Reached 20th level.
Played 10 spins of Roulette.
Reached 30th level.
You Discovered 125 locations.
Healed 10,000 points of damage with Stimpaks.
Healed 10,000 points of damage with food.
Picked 50 pockets.
Won 30 games of Caravan.
Won 3 games of Caravan.
Caused 10,000 damage with Unarmed weapons.
Got banned from all the Strip's casinos.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed All or Nothing.
Played the game from start to finish in Hardcore Mode.
Completed No Gods, No Masters.
Caused 10,000 damage with Explosives.
Completed Wild Card.
Recruited all companions.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Melee Weapons.
Played 10 hands of Blackjack.
Played 10 spins of Slots.
Installed 20 weapon mods.
Completed Return to Sender.
Completed The Legend of the Star.
Completed Talent Pool.
Completed The House Always Wins.
Repaired 30 items.
Completed Volare!
Hacked 25 terminals.
Discovered all snow globes.
Completed That Lucky Old Sun.
Caused 10,000 damage with Guns.
Made 50 Speech challenges.
Completed G.I. Blues.
Completed Ring-a-Ding-Ding.
Sold 10,000 caps worth of goods.
Discovered 50 locations.
Completed They Went That-a-Way.
Completed Come Fly With Me.
Reached 10th level.
Picked 25 locks.
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.
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-13 cardiac regulator sneaky suit!
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!
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) two star (**) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.