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.
Crafted 20 items.
Installed 20 weapon mods.
Discovered 50 locations.
You Discovered 125 locations.
Sold 10,000 caps worth of goods.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Explosives.
Caused 10,000 damage with Guns.
Picked 25 locks.
Healed 10,000 points of damage with Stimpaks.
Caused 10,000 damage with Melee Weapons.
Repaired 30 items.
Hacked 25 terminals.
Made 50 Speech challenges.
Caused 10,000 damage with Unarmed weapons.
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 Come Fly With Me.
Completed G.I. Blues.
Completed That Lucky Old Sun.
Completed Volare!
Recruit all companions.
Discover all snow globes.
Pick 50 pockets.
Heal 10,000 points of damage with food.
Win 3 games of Caravan.
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 Wild Card.
Complete All or Nothing.
Complete Veni, Vidi, Vici.
Complete Eureka!
Complete No Gods, No Masters.
Complete Talent Pool.
Complete Return to Sender.
Complete Arizona Killer.
Complete You'll Know It When It Happens.
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!
Made up your mind... about your brain.
Completed Old World Blues.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Reactivate all of the Sink's robotic assistants.
Decided the fate of all the Divide dwellers.
Completed Lonesome Road.
Acquired all upgrades for the Divide's signature weapon.
Find all of ED-E's upgrades in the Divide.
Detonate all of the warheads in the Divide.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Complete any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Complete any three Gun Runners' Arsenal (GRA) three star (***) Challenges.