He is using Aimbot hack.

I can see that KPM, HSK, ACC are going up extremely

28HS/54kill by ACE23

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/958189090815601536/902544258

23HS/41kill by ACE23

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/958184137204165504/902544258

28HS/50kill by AR160

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/830731947040978176/902544258

39HS/76kill by AR160

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/830719357648778496/902544258

32HS/64kill by AR160

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/830713701550142720/902544258