if you mean rex you get it when you recruit him
No, you can only craft, find or buy the dart gun in Fallout 3.
Rivit City
There isn't one
Broc flower cave.
Nope. Fallout 3 and Fallout: New Vegas are completely different games, sure they are in the same title and the same game engine, but the configurations and in-outs are different for both games, so you cannot simply apply a mod you used for Fallout 3 and try to run it on Fallout: New Vegas. You may be able to find mods that match your Fallout 3 mods for New Vegas on an assortment of different websites all over the net.
The best power armor in Fallout: New Vegas DT-wise is the Remnants Power Armor, which resembles the power armor worn by the Enclave in Fallout 2. A full set is given during the quest For Auld Lang Syne, but you can also find the armor itself in the Deathclaw Promontory, an unmarked location, and the helmet in Silver Peak Mine, which is located on the road to Jacobstown.
Fallout New Vegas is a role playing game.There are several powerful weapons available to find or to buy.The Sniper Rifle is one of the better weapons.
find a place called oasis and there you will find a bunch of green trees and a quest
any bethesda game try fallout 3 fallout new Vegas i find them better
To get the VIP keycard in fallout new Vegas find the H and H tool company building then up in the office on the top floor next to the terminal there is the keycard.
The quest Head of State is given by Hannibal Hamlin at the Temple of the Union.
you can find it on the body of most NCR veteran rangers