Survival Rules: 

1) You must be City Level 11+ to join the Arena!
2) Once you join the Arena, you cannot teleport out of Arena until you are eliminated or the Event ends.
3) You cannot activate City Shield throughout the entire Survival Arena Event.
4) In the Survival Arena, you can buy a special “Arena Teleport” at much cheaper price to speed up your hunting trip. The standard Teleport items (Advanced Teleport & Random Teleport) are both disabled inside of the Survival Arena.
5) The Teleport Cool-down is reduced to 20 minutes in the Survival Arena.
6) You cannot rejoin the Arena once you are eliminated (by massively defeated or by the Arena Shrunk).