What is the fastest way to level up without killing many people?

After finishing the game for every possible faction, I'm thinking about playing again from the start, maybe even in hardcore mode. What missions are the best to level-up quickly? By this I mean, what are some easy missions which give out a lot of experience? I don't want to kill a lot of people; I might even try not to kill anybody. Any ideas? I think I will also ignore locks and computers since I've done them all before. In my original playthrough, I made the mistake of doing a lot of side missions, so I lost the ability to level-up quickly.

Solution 1:

I'm going through a similar action myself right now -- I'm trying to kill as few humans as possible. (I made an exception for Benny, and raiders who attack on sight.)

Skills: I know you said you don't want to do locks and computers, but you'll have to for some things, so keep lockpicking and science high. Prioritize speech -- you can get out of a lot of fights, and even better, get XP for it. Maybe go for survival and/or repair, and go after the challenges for crafting.

So some early-game missions to help you out? Skip Primm entirely, head straight to Mojave Outpost. You'll get Ghost's quest there, which just requires you to go to Nipton. In Nipton, you'll get "Cold, Cold Heart," which just requires you to go to Mojave. Easy, non-violent 250 XP. Not much, but it'll get you started.

From there, make a beeline to New Vegas, by way of Novac. In Novac, do Boone's side quest, because it's quick and easy and non-violent. In Freeside, take the peaceful route through G.I. Blues, hook up the Followers and the Garretts, and do the Wang Dang Atomic Tango. Once in New Vegas, go talk to Mr. House and deal with Ring-a-Ding-Ding. After that, you should be able to take down Talent Pool pretty quickly and peacefully.

By the time you get through all this, with perhaps a little bit of minor side adventurism, and you should be at least level 10 or 12.

Solution 2:

I'm not too sure what the fastest way is to level up without killing people. I provided a link below with all the quests possible in fallout:NV. As you can imagine there is an enormous amount of side quests, you may want to read through them and determine which ones involve no killing.

http://fallout.wikia.com/wiki/Fallout:_New_Vegas_quests

Solution 3:

There is a way where you need only kill about seven people and you may reach level 30 before even leaving Goodsprings.

1. Do the tutorial mission, then go see Trudy
2. Talk to Cobb and ask if he needs help taking over the town. Go and kill Ringo in the gas station
3. Go to Cobb and tell him Ringo is dead
4. Cobb will ask you to shake down Chet... DON'T!
5. Kill Cobb and his friends and then go to Chet
6. Tell him the Powder Gangers need supplies and with a speech or barter check of 25 or higher you can keep asking him and reaching level 30 before leaving Goodsprings