Act III Key Fieldwork
Install the Fractional Distillation Apparatus.
You defeated the Scorned Organist and found a resonant pipe that could help Eido upgrade her Tonic Laboratory. Head to the Last City with the salvage in hand.
"Seems like everything about the Scorn ends in destruction and nihilism. Let's see if we can salvage their relics into something more… productive." —Eido