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.
Got banned from all the Strip's casinos.
Completed The Legend of the Star.
Recruited all companions.
Won 30 games of Caravan.
Won 3 games of Caravan.
Picked 50 pockets.
Reached 10th level.
Discovered 50 locations.
Picked 25 locks.
Caused 10,000 damage with Melee Weapons.
Played 10 spins of Slots.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Completed Ain't That a Kick in the Head.
Completed They Went That-a-Way.
Completed Ring-a-Ding-Ding.
Completed Render Unto Caesar.
Completed Veni, Vidi, Vici.
Completed Come Fly With Me.
Completed Arizona Killer.
Completed Volare!
Reached 30th level.
Installed 20 weapon mods.
Discovered all snow globes.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Explosives.
Healed 10,000 points of damage with Stimpaks.
Hacked 25 terminals.
Healed 10,000 points of damage with food.
Completed For the Republic.
Completed Wild Card.
Completed Eureka!
Completed No Gods, No Masters.
Completed Talent Pool.
Completed You'll Know It When It Happens.
Completed G.I. Blues.
You Discovered 125 locations.
Caused 10,000 damage with Unarmed weapons.
Made 50 Speech challenges.
Completed Return to Sender.
Completed That Lucky Old Sun.
Completed All or Nothing.
Reached 20th level.
Completed The House Always Wins.
Crafted 20 items.
Caused 10,000 damage with Guns.
Recruited a companion.
Sold 10,000 caps worth of goods.
Repaired 30 items.
Recruited Dean Domino, Christine and Dog.
Confronted Father Elijah in the Sierra Madre's Vault.
Trapped Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Collected 500 Sierra Madre Chips.
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!
Detonated all of the warheads in the Divide.
Acquired all upgrades for the Divide's signature weapon.
Found all of ED-E's upgrades in the Divide.
Completed Lonesome Road.
Decided the fate of all the Divide dwellers.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.