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 Explosives.
Got banned from all the Strip's casinos.
Played 10 hands of Blackjack.
Installed 20 weapon mods.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Played the game from start to finish in Hardcore Mode.
Won 3 games of Caravan.
Completed No Gods, No Masters.
Completed Wild Card.
Completed You'll Know It When It Happens.
Completed Talent Pool.
Caused 10,000 damage with Unarmed weapons.
Hacked 25 terminals.
Discovered all snow globes.
Completed The Legend of the Star.
You Discovered 125 locations.
Recruited all companions.
Reached 30th level.
Completed Ring-a-Ding-Ding.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Melee Weapons.
Healed 10,000 points of damage with Stimpaks.
Made 50 Speech challenges.
Reached 20th level.
Caused 10,000 damage with Guns.
Completed Volare!
Completed Return to Sender.
Picked 25 locks.
Discovered 50 locations.
Completed G.I. Blues.
Completed Come Fly With Me.
Sold 10,000 caps worth of goods.
Reached 10th level.
Completed They Went That-a-Way.
Completed That Lucky Old Sun.
Recruited a companion.
Repaired 30 items.
Crafted 20 items.
Completed Ain't That a Kick in the Head.
Pick 50 pockets.
Heal 10,000 points of damage with food.
Win 30 games of Caravan.
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.
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.
Evacuated Zion.
Crushed the White Legs.
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.
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
Acquired all upgrades for the Divide's signature weapon.
Found all of ED-E's upgrades in the Divide.
Decided the fate of all the Divide dwellers.
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) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.