I couldn't miss the chance to practice my drawing!
I couldn't finish 'em. Looks like this's gonna get complicated.
At the back and side are platforms with a Magic Pot. These will grant Astral Realignment to players, enabling them to damage Thanatos. Periodically, ghosts called Sandmen will try to attack these pots, and so a healer should be ready to heal them.
Astral Realignment is only granted to one party at a time, so the others must deal with both the Sandmen as well as Nemesis voidsent that continually show up.