The rest of the movie focussed on his father out seeking revenge. Erm, no, but then, I guess I take things a little bit more at face value. Mind you, this rarely happens. A good writer can usually craft at the very least a decent ending. But you must also remember that when you play a game with a centerpoint of stupidity, you cannot expect to live.
Players killing each other is another matter.
In Sing2, my solution was simple. If it was done while in politically maintained territory, or as a member of a military force of any kind, the chances of surviving, in game, the consequences of killing someone were minimal.