I see it in other games and I think it would look perfect on the map that will come in the next update. Implement a "Task" system, what would a "task" be? It's a system of killing mobs and from killing X mobs, you accumulate points so that in the end, you get a mission to go to a specific location and kill a boss. It usually takes several mobs, from the lowest rank to the highest rank. Example: Normal class creatures (Kill 100000) = 5 "Task" points Strong class creatures (Kill 1