The quick answer
Enter south of the Grand Canal Boundary Stone and break the damaged floor to reach the central hall. Solve its branches by aiming Sound Relays at seals, ringing the source bell and using Meridian Touch before the sound effect fades.
On this page
Read the relays before shooting
A bell produces the sound; a Sound Relay redirects it. Rotate a relay toward the next relay or gate, and use Lift when the target is higher. Once sound reaches a gate’s ring, use Meridian Touch to unlock it.
Set the complete route first. Otherwise, each bell shot simply repeats an incomplete path. Newly opened exits return to the central hall and reveal further doors.
Life: the water branch
Enter the initially open branch without a chest visible from the hall. Shoot its bell and use Meridian Touch on the side gate. Drop into the water, ring the next bell and unlock the adjoining room.
Pull the lever to lower the water. Rotate the platform’s Sound Relay clockwise and lift it toward the gate ring. Shoot the previous room’s bell, unlock the seal and return to the hall. Check the side chest along this branch and the underwater chest beside the lever platform.
Death: traps and hanging platforms
The other opening has a visible chest. That chest triggers a lethal trap; collect it knowing the trap can reset your position. Continue along the left corridor and operate the mechanism to disable the moving hazard.
Use the small gap midway along the trapped hall. One branch leads to a chest; the continuation reaches hanging platforms and another chest below the bell. Cross to the relay and point it at the gate ring. Return toward the gate, shoot the distant bell and use Meridian Touch to exit.
Scenery: fire corridors and the first relay pair
Take the chest beside the entry stairs. Cross three sets of fire traps during their safe intervals, checking the chest after the second set. Drop through the broken floor to another chest and the first relay puzzle.
Turn the side relay toward the relay below the gate. Turn that second relay toward the ring and lift it. Ring the bell and unlock the exit.
Scenery: open the relay enclosure first
In the next chamber, route sound along the left side into the central enclosure’s seal. Open it with Meridian Touch, then turn the newly accessible relay toward the final gate.
Reconfigure the outer relays into a chain through that central relay. Ring the source bell again and unlock the exit. Leaving the central enclosure closed makes the final chain impossible.
Scenery: the last three gates
Collect the chest on the right in the final puzzle area.
- Rotate the relay before the central gate clockwise and lift it. Ring the bell down the hall, then unlock that gate from its other side.
- Lower the same relay with Drop Down. Ring the bell again and unlock the second gate.
- Rotate the relay nearest the source bell counterclockwise. Ring it and unlock the final gate.
Return to the hall and claim the final treasure through the newly opened door. There are nine side chests; use the dungeon counter to distinguish a solved route from a complete treasure sweep.