It suggests that you should be Lv25+ to attempt the Lonesome Road DLC but it does not forbid you from entering if you are lower.
All the DLC packs are side missions only and must be completed before you end the game. None of them extend the main quest like Broken Steel did for Fallout 3.
00127C6C. The Mysterious Magnum is the presumed pistol of the Mysterious Stranger. It can be gained after landing The Lonesome Drifter a job at The Tops during the quest Talent Pool.
if you mean rex you get it when you recruit him
Follow the main quest line or head NorthEast of Goodsprings.
If you mean after you have finished the main quest line then no you have to load a previous save.
I dont think you can. As you can have many quests on the go, just choose which quest you'd like to do and leave the ones which you dont want to do.
All of them except for the "Dead Money" DLC.
You have to talk to the Elder, but first you have to complete all the quest's he assigns you. Then you can ask him, and he will grant you it. :)
I personally recommend Fallout 3 to any other Fallout game. Fallout 3 has a more organized and in my opinion interesting storyline. And you. And you can also keep the game going after you beat the main quest on Fallout 3 if you buy the DLC "Broken Steel."
Well you can go do quest from the Crimson Caravan company and talk to the creepy old lady, she has tons of quest that help the NCR.
He is at the Old Mormon Fort, which is in Freeside, on the outskirts of New Vegas. It is not a marked location on the map, just part of the Freeside area.
To begin Arcade Gannon's side quest all you have to do is hire him as a companion. He will then talk to you and he will start the quest. Arcade is located in Old Mormon Fort.