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.
Picked 50 pockets.
Hacked 25 terminals.
Played the game from start to finish in Hardcore Mode.
Caused 10,000 damage with Explosives.
Won 30 games of Caravan.
Won 3 games of Caravan.
You Discovered 125 locations.
Caused 10,000 damage with Unarmed weapons.
Caused 10,000 damage with Melee Weapons.
Healed 10,000 points of damage with Stimpaks.
Healed 10,000 points of damage with food.
Installed 20 weapon mods.
Completed Eureka!
Completed For the Republic.
Completed No Gods, No Masters.
Completed Wild Card.
Reached 30th level.
Caused 10,000 damage with Energy Weapons.
Crafted 20 items.
Made 50 Speech challenges.
Discovered all snow globes.
Picked 25 locks.
Completed All or Nothing.
Completed The House Always Wins.
Completed You'll Know It When It Happens.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed Volare!
Completed Talent Pool.
Got banned from all the Strip's casinos.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Reached 20th level.
Played 10 spins of Slots.
Completed The Legend of the Star.
Caused 10,000 damage with Guns.
Completed Return to Sender.
Sold 10,000 caps worth of goods.
Discovered 50 locations.
Completed That Lucky Old Sun.
Recruited all companions.
Completed G.I. Blues.
Completed Ring-a-Ding-Ding.
Reached 10th level.
Completed Come Fly With Me.
Recruited a companion.
Completed They Went That-a-Way.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
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.
Crushed the White Legs.
Evacuated Zion.
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-8 vertebrae-pulse-de-sensitizer frequency!
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Acquired all upgrades for the Divide's signature weapon.
Completed Lonesome Road.
Detonated all of the warheads in the Divide.
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) one star (*) Challenges.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.