I think only on that mission and from that starting location you can do a no weapons run. But I'm sure someone out there probably has done a different mission for it.
What my friend and i would do is every mission we would read their bios and determine if they were wholesome or not. If not they get a bullet. If wholesome they'd get a non lethal. I think it could be a fun little play through of a mission. I think you'd enjoy it
Never even considered this way if completing the levels I suppose I just love killing nasties! 😉 but interesting concept that I've not tried and as I've completed several times, maybe!?? I should try it mmmm?? But I do know it's very hard not to be seen at all.
Yes, especially at the end. You know when you about to finish something and then start worrying about messing it up. That happens to me now and then. And of course when I saw the sniper scope glint, I was really nervous.