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.
Completed No Gods, No Masters.
Completed Wild Card.
Reached 30th level.
Recruited all companions.
Healed 10,000 points of damage with Stimpaks.
Hacked 25 terminals.
Caused 10,000 damage with Unarmed weapons.
Won 30 games of Caravan.
Completed Talent Pool.
Completed G.I. Blues.
Completed Volare!
Caused 10,000 damage with Melee Weapons.
Made 50 Speech challenges.
You Discovered 125 locations.
Reached 20th level.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Guns.
Picked 25 locks.
Sold 10,000 caps worth of goods.
Repaired 30 items.
Discovered 50 locations.
Completed Come Fly With Me.
Reached 10th level.
Won 3 games of Caravan.
Completed Ring-a-Ding-Ding.
Completed They Went That-a-Way.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Played 10 hands of Blackjack.
Completed That Lucky Old Sun.
Recruited a companion.
Crafted 20 items.
Completed Ain't That a Kick in the Head.
Install 20 weapon mods.
Discover all snow globes.
Cause 10,000 damage with Explosives.
Pick 50 pockets.
Heal 10,000 points of damage with food.
Get banned from all the Strip's casinos.
Complete The House Always Wins.
Complete For the Republic.
Complete Render Unto Caesar.
Complete All or Nothing.
Complete Veni, Vidi, Vici.
Complete Eureka!
Complete Return to Sender.
Complete Arizona Killer.
Complete You'll Know It When It Happens.
Complete The Legend of the Star.
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.
Trap Father Elijah in the Sierra Madre's Vault.
Crushed the White Legs.
Scouted the Zion Valley for signs of the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Evacuate Zion.
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Find all of ED-E's upgrades in the Divide.
Decide the fate of all the Divide dwellers.
Complete Lonesome Road.
Acquire all upgrades for the Divide's signature weapon.
Detonate all of the warheads in the Divide.
Cause 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.