Enemies killed by concussion grenage?

If they're turning up dead then yes it will. Stick with non lethal takedowns and the stun gun and you should be fine...just carry around something heavy for the bosses.

Well if you're the one killing them then yeah.........I'm sure you are since NPCs don't just die in this game. Also if they're dieing when you do a takedown then that means you're holding O instead of just pressing it. Also why in the world would you think a mine wouldn't kill someone O_o.

I heard theres a glitch where an unconscious enemy sometimes shows that they are dead but they really arent. I've only seen it a couple times tho & I'm on my 2nd play thru. Oh and I think concussion grenades do cause a little bit of damage, I swear I killed then1st boss with one but I was moderately intoxicated so I'm not 100% sure. This trophy is a pain cuz it's easy to accidentally kill someone & not notice. I think i missed it on my 1st play thru cuz I left unconscious enemies face down in water. Either that or just before the end, there's an area with a lot of frag mines & one of the crazies set one off & killed himself when I was a good distance away. If I don't get it this time, I might give up. I think the only way to know if you got it is to finish the game.