Video evidence from the original’s report wasn’t working. As I could not reply there, I make a new post.
 Godmode in PvP
 Cheating in PvP
 Few other people
 Rami, Mason, Dark IRL and some other
At first it looked like he has extreme lags. But in such case one is still killed eventually. Not in this case. He’s been killing other one by one, often with 0HP. Had a killstreak +20 at the time of writing.