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 Melee Weapons.
Caused 10,000 damage with Unarmed weapons.
Got banned from all the Strip's casinos.
You Discovered 125 locations.
Completed The Legend of the Star.
Picked 50 pockets.
Discovered all snow globes.
Won 30 games of Caravan.
Won 3 games of Caravan.
Healed 10,000 points of damage with food.
Completed Return to Sender.
Completed Talent Pool.
Played 10 spins of Roulette.
Played 10 spins of Slots.
Reached 10th level.
Completed That Lucky Old Sun.
Caused 10,000 damage with Explosives.
Completed All or Nothing.
Caused 10,000 damage with Energy Weapons.
Completed The House Always Wins.
Hacked 25 terminals.
Completed Eureka!
Completed For the Republic.
Completed Volare!
Completed Veni, Vidi, Vici.
Completed Render Unto Caesar.
Completed Arizona Killer.
Healed 10,000 points of damage with Stimpaks.
Played the game from start to finish in Hardcore Mode.
Completed No Gods, No Masters.
Completed Wild Card.
Completed You'll Know It When It Happens.
Reached 30th level.
Recruited all companions.
Completed Ring-a-Ding-Ding.
Made 50 Speech challenges.
Installed 20 weapon mods.
Played 10 hands of Blackjack.
Discovered 50 locations.
Picked 25 locks.
Caused 10,000 damage with Guns.
Completed G.I. Blues.
Crafted 20 items.
Reached 20th level.
Sold 10,000 caps worth of goods.
Completed They Went That-a-Way.
Completed Come Fly With Me.
Repaired 30 items.
Recruited a companion.
Completed Ain't That a Kick in the Head.
Recruit Dean Domino, Christine and Dog.
Confront Father Elijah in the Sierra Madre's Vault.
Complete the Sierra Madre Gala Event.
Trap Father Elijah in the Sierra Madre's Vault.
Collect 500 Sierra Madre Chips
Evacuate Zion.
Scout the Zion Valley for signs of the White Legs.
Crush the White Legs.
Arrive at Zion.
Resupply Daniel and the Sorrows.
Recover X-13 cardiac regulator sneaky suit!
Reactivate all of the Sink's robotic assistants.
Make up your mind... about your brain.
Complete Old World Blues.
Recover 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.
Cause 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.