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.
Completed Wild Card.
Completed No Gods, No Masters.
Completed You'll Know It When It Happens.
Completed Return to Sender.
Discovered all snow globes.
Healed 10,000 points of damage with Stimpaks.
You Discovered 125 locations.
Played the game from start to finish in Hardcore Mode.
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Completed That Lucky Old Sun.
Got banned from all the Strip's casinos.
Recruited all companions.
Caused 10,000 damage with Melee Weapons.
Completed Come Fly With Me.
Installed 20 weapon mods.
Completed Volare!
Hacked 25 terminals.
Reached 30th level.
Completed The Legend of the Star.
Completed Talent Pool.
Discovered 50 locations.
Reached 20th level.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Made 50 Speech challenges.
Played 10 hands of Blackjack.
Completed G.I. Blues.
Sold 10,000 caps worth of goods.
Caused 10,000 damage with Guns.
Completed Ring-a-Ding-Ding.
Picked 25 locks.
Caused 10,000 damage with Unarmed weapons.
Completed They Went That-a-Way.
Reached 10th level.
Recruited a companion.
Crafted 20 items.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
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.
Complete The House Always Wins.
Complete For the Republic.
Complete All or Nothing.
Complete Eureka!
Confronted Father Elijah in the Sierra Madre's Vault.
Trapped Father Elijah in the Sierra Madre's Vault.
Recruited Dean Domino, Christine and Dog.
Completed the Sierra Madre Gala Event.
Collected 500 Sierra Madre Chips.
Scouted the Zion Valley for signs of the White Legs.
Crushed the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Evacuate Zion.
Reactivated all of the Sink's robotic assistants.
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-13 cardiac regulator sneaky suit!
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Found all of ED-E's upgrades in the Divide.
Completed Lonesome Road.
Decided the fate of all the Divide dwellers.
Acquire all upgrades for the Divide's signature weapon.
Detonate all of the warheads in the Divide.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Caused 10,000 damage with unique Mojave Wasteland weapons.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Complete any three Gun Runners' Arsenal (GRA) three star (***) Challenges.