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.
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.
Got banned from all the Strip's casinos.
Completed Ain't That a Kick in the Head.
Completed They Went That-a-Way.
Completed Ring-a-Ding-Ding.
Completed Wild Card.
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 Volare!
Cause 10,000 damage with Explosives.
Cause 10,000 damage with Melee Weapons.
Heal 10,000 points of damage with food.
Cause 10,000 damage with Unarmed weapons.
Win 30 games of Caravan.
Play the game from start to finish in Hardcore Mode.
Complete The House Always Wins.
Complete For the Republic.
Complete Render Unto Caesar.
Complete All or Nothing.
Complete Veni, Vidi, Vici.
Complete Eureka!
Complete Arizona Killer.
Complete The Legend of the Star.
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.
Scouted the Zion Valley for signs of the White Legs.
Crushed the White Legs.
Arrived at Zion.
Resupplied Daniel and the Sorrows.
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!
Found all of ED-E's upgrades in the Divide.
Decided the fate of all the Divide dwellers.
Completed Lonesome Road.
Acquired all upgrades for the Divide's signature weapon.
Detonate all of the warheads in the Divide.
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.