I was laughing at the expressions of the PKer, but this is still wrong. As Adrian gets more powerful, he becomes more and more of an asshole. Previously he was merciless to enemies... Now he gets PK'd in a video game and takes it out on someone in real life. Not cool.
Side note: had the story even implied that PVP was a facet of this game up until this point? I thought he was avoiding people just to not have hunting ground competition / not have people find out who he is, not fear of being PK'd.