Quests are quests that the game gives you the doings, to help you level up and earn some rewards. In this game Dekaron have numerous quests for you to do. Each other harder easier, that depending on the level of the monster. The most difficult quests gained more experience and more money, which helps you for sparing some change after purchasing armor, potions, ... . In each city that you're going through numerous quests for you to do. When an NPC has an exclamation point above his head, is a sign that you have missions to do with that person. And when you accept the mission, while it is not finished on top of the head of the NPC will be a question mark. Once complete laps to the NPC you took your mission.
In Deneb are this quests:
In Haihaff are this quests:
In Parca Temple are this quests: