Grand Theft, 2nd Degree

Apparently you earn credit towards this achievement by looting other players corpses in Ashran, but what I have noticed is that you also get credited towards this achievement if you are in an area near a player who releases. The artifacts that they carry are distributed around to all players close to them when the release their spirit. So even if you aren't looting these, you will still be working towards this achievement as long as your where the fighting is. There is no way to track the actual count for the achievement as far as I know, I will edit this post if I find a way to track this.