Hello, I was playing with my friends today and this guy kept shooting at us and giving us 1 shot kill, from F35, helicopters, snipers, etc...
Please check his stats and you'll see. 1 shot kill. I even was jumping from a building once and he killed me mid air with a sniper...
http://battlelog.battlefield.com/bf4/soldier/xXxKoooshxXx/stats/860187641/pc/
Thanks