Haha speaking of traders, once I saw a lady who had a brahmin and a dog. I didn't want to lose any karma though. Nearby I knew there was a Mr. Gutsy.
She walked right into him and her dog and brahmin went down. I looted the brahmin, but then the gutsy went away. The trader was still in fighting mode, so I walked into her so many times that she got mad and followed me. I lead her back to Mr. Gutsy and they killed each other :D
Also, I maxed out big guns at level 10, now I will max out lasers