He is aim bot cheater.

ex )

15HS/22Kill with MG4

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/923539479899355008/1876139348/

39Kill ACC29% with MG4

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/923543425526519296/1876139348/

6HS or 7HS/7Kill ACC39% with MG4

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/923493616136476160/1876139348/

21HS/42Kill with MG4

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/923459370648460288/1876139348/

21HS/54Kill ACC31% with Type88 LMG

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/922873543062465920/1876139348/

52Kill ACC49% with U-100 MK5

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/921248340930678208/1876139348/

https://battlelog.battlefield.com/bf4/battlereport/show/1/923744272665865536/1876139348/

https://battlelog.battlefield.com/bf4/battlereport/show/1/923750294785001792/1876139348/