aimbot / wallhack , check stats and game logs 

http://battlelog.battlefield.com/bf4/battlereport/show/1/1054134512934183552/1003554264477/  damage hack 1 bullet to kill , also always WH is on .

older games used aimbot , he turned aimbot off and used damage hack after 5min of the game , 1 bullet to kill .