#Hey
I dont know if your familiar with βAssasinβ the real life game. See wikipedia https://en.wikipedia.org/wiki/Assassin_(game).
the game host assigns targets to the players. A player is usually told the personal details of their target as collected by the game host. The aim of the game is for players to track down and eliminate their targets until only one player remains. When a player eliminates their target, they get the victimβs target(s). Only one assassin can kill a target at a time. If only one player remains, the game is over.
Perhaps you want something similar to ToS. But this is a non combat PvP mode so it will require the participants a non damaging method to eliminate (not kill in game) another player from the Event.
The winner gets a temporary EXCLUSIVE accessory (my suggestion would be black shades on the eyes in reference to the meme http://knowyourmeme.com/memes/deal-with-it )
http://likeafilmstar.com/wp-content/uploads/2013/09/billy10.png
the accessory gets transferred to the next winner of the event.