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