Fissure/guide

Mask
Interact with the pink object. Go north-east and interact with the cloudy gate. Go up into the castle. Go north and interact with the NPC in front of the throne.

Acolyte
Interact with the pink object. Go north-east and interact with the cloudy gate. Go up into the castle. Take either path to the left or right to your north. Interact with the circular window. Interact with the ladder. Go north and interact with the NPC.

Angel
Interact with the pink object. Go north-east and interact with the purple orb. Walk down into the center of the circle. Interact with the angel.