Discover all Formidable Foe locations across Honkai: Star Rail's Herta Space Station, Jarilo-VI, and Xianzhou Luofu. Learn where to find every challenging enemy to complete your collection.
This guide details the locations of all Formidable Foe enemies in Honkai: Star Rail. These challenging opponents are found across various worlds and can be re-read from the "Bookshelf" option in the Phone menu or accessed via the Archives in the Passenger Cabin aboard the Astral Express.
Some Formidable Foes may have multiple parts that are collected separately, and some are time-gated, requiring the previous part to be obtained first.
Herta Space Station
There are 51 Formidable Foes located on Herta Space Station:
- Herta Asset Damage Evaluation List — 1 part
- Cosmos Public Service Award — 1 part
- Letter From the Comet Hunter — 3 parts
- Comet Hunter's Treasure — 4 parts
- Kapo-Kali Secret Recipe — 1 part
- Species of the Galaxy: Wubbaboo — 1 part
- Xin-41 Homeward Cloud Messaging — 1 part
- Researcher Eikura Shuu's Diary — 1 part
- Observation on Wubbaboo Behavior — 1 part
- Fragments of Herta Research Atlas Volume 7: Traffic — 1 part
- Bye, Herta — 1 part
- Letter From Locus Silentii — 1 part
- Herta's Manuscripts — 4 parts
- Space Station Love Poems — 3 parts
- Sheila's Character Script — 1 part
- Confession Letter — 1 part
- Asta's Letters From Home — 1 part
- Asta's Shopping List — 1 part
- Asta and Business Elite Correspondence Records — 1 part
- Asta's Equipment Purchase Contract — 1 part
- "Home-Use Object Finder" After-Sales Feedback Form — 1 part
- Species of the Galaxy: Tottonid — 1 part
- (Recording) A Fool's Play: Calamity's Wrath Seeks Olden Clash, Fool's Blade Rends Divine Flesh — 1 part
- The Well-Kept Secret of the Maintenance Department — 1 part
- Notification for Physical Examinations — 1 part
- Space Station Introductory Guide — 1 part
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