I disagree about your statement. What's the point of playing with other players if you cannot quest with them? Since party members arent of the same strength, it can be seen as unlogic to require each players to DO the killing. Therefor, one must quit the party and go farm alone if he's weaker since he cannot achieve kills by a lack of strength. Mu Online is a game designed for cooperation between players. As other MMO games, each party members SHOULD complete quests together when playing in a party.