I only did a few stealth kills to the enemies as I made my way through it very fast, although they could potentially be avoided.
What I did as Briggs mostly was run passed who I could, used the noise stickies / gas grenades / shock stickies in order to make my way passed most people without having to kill them if I had to. I imagine with a few run-throughs, you can find all sorts of quick ways as there is a lot of opportunity for stealth there. Yeah I got this one and am ranked one of the top scores in the world without even trying for it.
