Dimension's Cauldron (Part 2)

From the south-east corner of 3F, head north. About two-thirds up the passageway, continue north and then west to the far corner to find a chest containing a Gandiva and a trap.

Defeat the boss, Salamander (Level 80, 200,000 HP), which is weak to Water and Dragon. It uses Scorching Eye and Fiery Breath. Elemental Barrier and a trio of ghosts are effective strategies.

Return to the westward path you ignored earlier and head south towards the south-most end of 3F. Open the chest here for a Soul of Thamasa.

Head west, then north at the next junction. Continue north at the subsequent junction to find the stairs to the next area.

Before proceeding, head east along the side path while keeping to the south. Open the chest at the end for a Dragvandil, but beware of a trap.

Defeat the boss, Ladon (Level 80, 200,000 HP), which is weak to Wind and Dragon. It uses Earth Eye and Megaton Press, which can cause Paralyse. Group-cast Elemental Barrier, have a tank absorb attacks, or use magic while accounting for its high Magic Defence. Equip items to negate Paralyse.

In 2F West, from the north-east corner, head west briefly. Follow the passage below all the way south, keeping to the east, to retrieve a Crystal Vest from a chest.

Return north, then travel west, ignoring the southward path. At the crossroad, go south to find a chest with a Megalixir.

Head east from the crossroad to the south part of the floor. Go north at the junction to find a chest with a Bloody Shield.

Head west from the crossroad to the south-west corner, where the stairs to the final area are.

In 1F West, follow the path west. Continue to the far west where the final chest lies.

Open the chest to find an Ama-no-Sakahoko and battle the boss, Shinryu (Level 80, 200,000 HP), which is weak to Dark and Dragon. It uses Celestial Eye and Holy Breath, which inflicts Blind. Elemental Barrier is recommended.