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