The completion loop
The confirmed goal is to return every music box to Arpeggio. That implies two useful checks for your own run: the box itself and whether the collection has been returned/recognized.
Pair this with Arpeggio’s character page
Arpeggio is also associated with a cave encounter in the achievement set. Use the character page for encounter context and this page only for the collection track.
Avoid duplicate searching
Write down the realm and nearest stable landmark for each music box as soon as you collect it. A named tracker is faster than relying on screenshots or memory later.
Final audit
If the completion goal does not trigger, compare confirmed finds against the areas you visited before your latest traversal upgrades and prioritize those return routes.
Core game facts are limited to the official Steam store/demo and official Steam news; achievement-specific scope is based on released platform achievement metadata.
Common questions
Does this page invent exact locations?+
No. Exact locations are added only when verified; the current page clearly separates confirmed goals from route notes.
When should I do cleanup?+
Usually after major progression, when more traversal options and locations are available.