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.
Caused 10,000 damage with Energy Weapons.
Reached 30th level.
You Discovered 125 locations.
Recruited all companions.
Played the game from start to finish in Hardcore Mode.
Discovered all snow globes.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed Eureka!
Completed For the Republic.
Completed You'll Know It When It Happens.
Installed 20 weapon mods.
Completed That Lucky Old Sun.
Reached 20th level.
Completed Return to Sender.
Discovered 50 locations.
Crafted 20 items.
Completed Volare!
Sold 10,000 caps worth of goods.
Recruited a companion.
Completed Talent Pool.
Played 10 spins of Roulette.
Completed No Gods, No Masters.
Made 50 Speech challenges.
Completed Wild Card.
Caused 10,000 damage with Guns.
Completed G.I. Blues.
Picked 25 locks.
Reached 10th level.
Completed Ring-a-Ding-Ding.
Played 10 hands of Blackjack.
Played 10 spins of Slots.
Completed They Went That-a-Way.
Completed Come Fly With Me.
Won 3 games of Caravan.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
Cause 10,000 damage with Explosives.
Heal 10,000 points of damage with Stimpaks.
Cause 10,000 damage with Melee Weapons.
Hack 25 terminals.
Pick 50 pockets.
Heal 10,000 points of damage with food.
Cause 10,000 damage with Unarmed weapons.
Win 30 games of Caravan.
Get banned from all the Strip's casinos.
Complete The House Always Wins.
Complete All or Nothing.
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!
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.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Cause 10,000 damage with unique Mojave Wasteland 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.