Blingin' - Acquire the Pimp-boy 3 billion

Highclass Dining - Eat the big 4: House, Caesar, Benny, and Moore.

Irony is a dish..... -Eat the owners of the Ultra Luxe

Beef tips - Tip 50 brahmin

Low stanards - Use the Black Widow/Lady Killer perk on 10 people.

Generous Host - Take a companion out for a night on the Town.

HighRoller - Lose more than 1000 chips in a single Casino.

Platinum, pvssycat - Get Benny "Alone"

hokerBot 9000 - Use fisto 10 times

Homecoming Queen - Take Ronnie back to the BoS bunker, Hidden valley, and Helios One.

You can Keep your hat on - Take boone's Hat and replace it with another

Abject Dispondancy - Leave arcade by himself for 24 ingame hours.

Little Jimmy? - Take lilly to visit the Children.

Vaquero - Take Raul brahmin tipping

Homeward Bound - Take Rex to visit Ceasar

Whiskey Rose - Give Cass a total of 50 bottles of whiskey

Blast from the Past - Find Ulysses's old house.

Honoring the fallen - Collect 50 NCR or BoS tags.

History Lesson - Sit through the entire presentation at Nellis AFB

Deja Vu - Find and read a copy of the Wasteland Survival guide.

Blue Moon - Visit Goodsprings Cemetary at night.

Bartering with a Butcher - Persuade your way out of a Particularly Deadly situation.

Dressed to Impress - Dress your self and a Companion in Formal Attire.

Look to your back - kill mr.house, caesar, Yes man, The man of ncr (i forget the name, ambassador anything .-.), and the "second in command" of caesar.

Courier of the vault - Find all vaults in the game

Mojave good Master - Make all possible quests in good final
Mojave Bad Master - Make all possible quests in bad final

Metal part inside me - make six with a robot!

I don't think you can tip brahmin in fonv it was rather entertaining hobby in fo3.

Yes, you can. 1. Find REGULAR Brahmin 2. Crouch. 3. Have no weapon equipped 4. Holster them fists! 5. Press the "move object" button (R3 on PS3) 6. Magic!

Like The Back Of My Hand - Discover every single location in the Mojave Wasteland.
3 Birds With One Bomb - Plant C-4 on a person then kill 3 or more people with the explosion.

Here's some more.

It's on the house- Pass 100 barter speech checks.

I ain't afraid of no ghost- Complete the Main Quest without recruiting a companion.

AHHHH! AHHHH! I HATE YOU NEW VEGAS!- Die 250 times.

Don't you pull that trigger- Kill an enemy before they get a chance to shoot you.

Me, herself, and that guy- Find a way to recruit two humanoid companions.

"What a useless guy." - Kill Lanius/General Oliver using any unarmed weapon.

Where everybody knows your name-Having a rating of "liked" by all factions

Friend of the people comrade-Complete a pacifist play-through

No stone unturned-Find all hollowed out rocks

or
1) find brahmin
2) Crouch
3) repeatedly tap "A" till that sob falls over.....

-50 gs
also may cause ranting, raving, swearing, yelling, punching, kicking, and the general want to destroy your game.