At every 10 ranks, a mob is spawned to hunt you down. This is the Boss that you must defeat.
Players will automatically advance when the boss is defeated, thus introducing a ranking mechanism that can be used once every 10 levels.
When a boss is defeated, a quest is added to your quest list.
If the boss is not defeated, instead of ranking up, you are set back a level.
"You have defeated the first boss!" (level 10)
There are multiple boss types for each 10 levels, depending on your characteristics. The final (fifth) boss has nice stuff on it, which varies depending on boss type.
If you cannot defeat the 5th boss, you are set back to level 49, and can try again later.
