The player selects one of the 4 Arthurs and participates in the battle (quest) with that Arthur.
Battle (quest) begins by partying up with 4 other players or NPCs.
(The party members must contain one Mercenary Arthur, one Merchant Arthur, one Thief Arthur, and one Bard Arthur.)
Once the enemy’s HP is reduced to 0, the battle is won. But if the Athur’s HP reaches to 0, then it is lost.