Is cheating prevalent?

I don’t know how this dude does it. In seven total engagements, he’s killed me five times and I’ve never seen him. Like he’s a ghost. I can’t catch a glimpse of him and he’s throwing kill shots at me. Is he cheating? How does he know where I am when I haven’t made a sound? Does he have player trackers? Is he aimbot-ing?

Also, unrelated side note, why are faction mates calling me a “team killer” and placing a “bounty on my head” when I haven’t killed anyone. Is it suppose to be a joke? I don’t get it.