Fallout: New Vegas

You need a few things for this to work.
1. speech 40 or above
2. accepcted by the NCR

Go to camp golf (near lake las vegas) and speak Sergeant McCredie in his communications tent, and start the "Flags of our foul ups" side mission by offering to help whip his team into shape. After mission has started* EDIT* talk to Ohanrahan(tall guy, red hair),ask about squadmates and agree niceness is the best way to help, then go speak with Razz, short guy says "holmes" and has a mohawk. Ask him about his team and then you get a speech challenge,40+, win the challenge and keep doing speech challenge over and over. you get xp every time you win. keep tapping A so you are constantly challengening and getting XP. If you stop getting xp, tell razz goodbye, apply stat points and perks for all the levels you went up. Go to Razz and start the speeech challenge again. Keep goin til you hit lvl 30.

If an update patches this, you will have to go to your memory in system settings from your xbox dashboard and clear cache and do this method off line. once you hit lvl 30 you can play online and download updates. I started this at lvl 9 so as long as your speech is high enough and NCR does not hate you, you can get this pretty early in the game.

MSG me if I left anything out and I will edit solution.


*note: this will also get you Orater achievement. ( 50 speech challenges)