Hacking.

Damage, aim, and walls. Click the link to see this video and you can see for yourself that this is true: https://www.youtube.com/watch?v=fPDJY0XyWf4&feature=youtu.be

Here's his 247fairplay: https://www.247fairplay.com/CheatDetector/LuridFury

His stats aren't that insane but as you can see from the video, he's hacking alright.

http://battlelog.battlefield.com/bf4/battlereport/show/1/907766957927473472/896504871/