A Lamenter at Fate's End
Quick summary
The medicine meant to restore Caribert didn't work quite as expected. During the process of remaking the medicine, you seem to find yourself beset upon by strange phenomena...
Game mechanics wiki
Content sourced from miHoYo's official HoYoWiki (wiki.hoyolab.com) — official text, not a paraphrase.
Attributes
Name: A Lamenter at Fate's End · Type: Archon Quest · Region: Sumeru · Version Released: 3.5
Quest Objectives
1. Follow the hilichurl · 2. Follow the hilichurl to the cavern · 3. Talk to Eide · 4. Continue exploring · 5. Talk to Eide · 6. Defeat the Fortune Lector · 7. Talk to Eide · 8. Continue exploring · 9. Talk to Eide
Quest Chain
1. Destined Encounter · 2. Fortune-Mocking Pedigree · 3. A Lamenter at Fate's End · 4. Portended Fate · 5. Sequel: Prelude of Blancheur and Noirceur
FAQ
How do I unlock A Lamenter at Fate's End?
See the "Quest Information" block above — unlock condition and quest chain per the official source.