Battle with the Four Archfiends

[Acyd]

Another idea have Boss Rush based on the Elements Face all 3 (one after another, no pause)
Boss Rush: Fire (Marilith, Rubricante, Ifrit)
Boss Rush: Water (Kraken, Cagnozza, Leviathan)
Boss Rush: Earth (Lich, Scarmilogn, Titan)
Boss Rush: Air (Tiamat, Barbarossa, Garuda)

Now that would be pretty damn fun. I am all for that.