[Resolved] Player report ''JustAbuilder 2''

A player named ‘‘JustAbuilder 2’’ have been acting suspiciously. It seems that he is invulnerable, and cannot be killed. I belive that it’s not Lag, because he moved and attacked normally, but he didn’t die when I got him at 0 HP.

Here is the evidence:
http://cloud-3.steampowered.com/ugc/451791865699247036/9EC06087FEB976799669F6D2F048750FC7274DB5/
http://cloud-3.steampowered.com/ugc/451791865699261305/3F22B3340B73B33F803EFE1CBE6F72EB34605A07/