Nope.
I actually tried to make a second character fairly recently. I was going to make a "malevolent pacifist", someone who could do anything except kill sentient enemies. Fear, poison, stuns, cripples, stealing, stealth, just no killing. I was trying to mix it up.
Sadly, it just caused me to realise that the combat is really all the game has to offer and the combat kind of sucks. Walk up to enemy, mash LeftMouse, repeat until everything is dead. Hold LeftMouse if magic user.
Without killing everything that looks at you funny you're left with... what, walk around collecting loot?