
Couple of clues here.
#1, 1223345 isn't actually killing him that I can see, the acks shooting at him are.
#2 1223345 is probably totally innocent of any wrongdoing other than having a really bad lag issue.
My guess, is that one or both of them had a big connection issues when they entered the arena.
If player A logs in, changes country on "his" FE, but the server doesn't get it, you can get things like this happening. Which is what appears to be an enemy spawning in, triggering the acks, etc.
This "should" have been sent to support@hitechcreations.com where they have tools that can tell them more about whats happening. When in doubt, send it to skuzzy.
Not a hack, not deliberate, 99% positive its a network/lag issue nothing more.
HTC feel free to correct me if I"m wrong.