Combat

I want ot know if he's a psychopath, a sociopath, or something else basically. I'm not psychology major, so it's hard for me to tell.

Hmmm, personally I recomend not knowing. You don't need to answer every question yourself. ((that way you also leave the specualtion rolling and it gives your readers soemthing to try and figure out, it's good for getting them to come back or,,, too keep reading ;P))

SOmetimes, not giving a clear answer even to yourself, is a pwoerful tool in writing. Because... the unknown... is very interesting.