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.
Hacked 25 terminals.
Healed 10,000 points of damage with food.
Won 30 games of Caravan.
Caused 10,000 damage with Explosives.
Healed 10,000 points of damage with Stimpaks.
Picked 50 pockets.
Reached 30th level.
You Discovered 125 locations.
Caused 10,000 damage with Melee Weapons.
Caused 10,000 damage with Energy Weapons.
Recruited all companions.
Installed 20 weapon mods.
Got banned from all the Strip's casinos.
Made 50 Speech challenges.
Discovered all snow globes.
Completed The Legend of the Star.
Caused 10,000 damage with Unarmed weapons.
Picked 25 locks.
Won 3 games of Caravan.
Completed You'll Know It When It Happens.
Completed Return to Sender.
Reached 20th level.
Completed Talent Pool.
Discovered 50 locations.
Completed That Lucky Old Sun.
Sold 10,000 caps worth of goods.
Played the game from start to finish in Hardcore Mode.
Completed Eureka!
Completed For the Republic.
Completed Volare!
Completed Veni, Vidi, Vici.
Caused 10,000 damage with Guns.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed All or Nothing.
Completed The House Always Wins.
Completed No Gods, No Masters.
Completed Wild Card.
Recruited a companion.
Repaired 30 items.
Played 10 spins of Slots.
Played 10 spins of Roulette.
Played 10 hands of Blackjack.
Reached 10th level.
Completed Come Fly With Me.
Crafted 20 items.
Completed Ring-a-Ding-Ding.
Completed G.I. Blues.
Completed They Went That-a-Way.
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.
Evacuated Zion.
Crushed the White Legs.
Scouted the Zion Valley for signs of the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Reactivated all of the Sink's robotic assistants.
Recovered X-13 cardiac regulator sneaky suit!
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Completed Old World Blues.
Made up your mind... about your brain.
Decided the fate of all the Divide dwellers.
Found all of ED-E's upgrades in the Divide.
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
Acquired all upgrades for the Divide's signature weapon.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.