Decaying Gourmand aka Zombie Goobbue

During the fight with the gourmand, a player will be targeted (as noted with a red line). This means that that player is going to be absorbed into the creature. When this happens, a new target, the Voracious Maw, will appear. Damage will need to be focused on this until dead in order to save the person trapped within. If the party fails to do so within a certain amount of time, the player will be killed.

Arioch

This winged beast will ignore you upon your entry to the arena. In order to gain his attention, players must battle the Ranch Wamoura scattered around the field. By doing so, players will receive a debuff that will lure Arioch out of the air. The trick is to make sure that a player in the party has this status at all times. If it wears off, Arioch retreat back into the air and regenerate its health.

It’s also important to note that while Arioch doesn’t hit hard, whoever has this debuff will have enmity.

Diabolos

Last but not least is the final boss, Diabolos. Upon entering the arena, eight doors will appear around the outside- each door will be marked with one of four symboles. There will be two of each symbol, meaning that there are four pairs of doors. Upon entering, one person in the party should be designated to mark the doors so that you can easily identify the pairs. When Diabolos uses Ominous Ruin, the party will want to open a single pair of doors which will open a portal to the void, drawing you in and allowing you to completely evade the attack.