Holy cats, I forgot how bad gun play is in this game. It's pretty much stealth by necessity. Also, I don't know if anyone shares this feeling or if it's just me, but I think every game should let you map the "fire" button to the trigger instead of the shoulder button. I always play that way if I can.
The actor who played Sarif did a really fantastic job of making him smarmy and unlikable. I cringe when he says "Adam".
My intended play-style is "I don't give a damn". I generally go with non-lethal if I can but I don't sweat the details when I have to take a head-shot. Stealth, however, is the first priority. That's because I don't like dying but also because that's how I roll.