Fatal Claw Bosses: Every Named Encounter

Fatal Claw does not publish a boss list, so this one is assembled from things that can be re-checked: 9 encounters are named in the Steam achievement schema or in an NDEV GAMES announcement, and anything that only exists in a player report is labelled as such in the last column instead of being quietly folded in.

What this table deliberately does not have: invented health bars, invented phase counts and invented weaknesses. The studio has published none of those numbers. Where a teaser does describe a fight's gimmick — Enma's illusion sorcery is the one real example — it is quoted in the notes.

Boss Where / when Confirmed by Notes
Saitin Early game Achievement "Weed Control" — Defeat Saitin. The first named kill on the achievement list, which is why it reads as the opening boss of the run.
Mirkam The village power line Achievement "Let There Be Light" — Defeat Mirkam and restore power to the village. The kill is tied to a world state change: village power comes back on afterwards.
Irbes Mid game Achievement "Too Slow..." — Defeat Irbes. The achievement name is the only hint Steam gives about the fight's gimmick; we are not inventing a speed requirement from it.
Giant Guardian Wave discharger set piece Achievement "Did It Work?" — Disable the Giant Guardian using the wave discharger. Disabled with a tool rather than killed outright — the achievement wording is "disable", not "defeat".
Ortrinde Mid-late game Achievement "Pull Yourself Together" — Defeat Ortrinde.
Sommar Late game Achievement "Fulfill the Calling" — Defeat Sommar.
Cain Duel Achievement "Faster Than Lightning" — Defeat Cain in a duel. Region Teaser #3 describes Cain as someone even the Sorr leader was wary of, which places this duel late in the story.
Enma Higasha Tundra / Tenshukaku Interior Region Teaser #3 (2026-07-22): "Another Sorr warrior known as the Golden Spirit Wolf, Enma, stands in Kisha's way." The teaser credits Enma with sorcery that blurs the line between reality and illusion — the only mechanic hint NDEV GAMES has published for this fight.
Sorron Beyond the Wolf Gate Achievement "The End of the Illusion" — Defeat Sorron and put an end to his long-held ambitions. Leader of the Sorr. Region Teaser #3 names the stronghold past the Wolf Gate as his.
Kurtz player report Black Mire Steam discussion thread "Black Mire Boss - Kurtz", posted 2026-08-22 during the 1.0 pre-release. No achievement or announcement mentions Kurtz, so this row stays flagged as a player report until NDEV GAMES publishes something on it.

Reading the order

The Steam achievement list is ordered the way the game unlocks them, which makes it the closest thing to an official fight order that exists: Saitin sits at the top, Sorron near the bottom. That ordering is what the walkthrough route follows. Fights tied to a region — Enma in the Tenshukaku Interior, Kurtz in the player-named Black Mire — are cross-referenced on the region index.

Two entries are not straightforward kills. The Giant Guardian is disabled with the wave discharger rather than defeated, and Cain is fought as a duel. Both distinctions come from the achievement wording, not from us.

Boss list verified:

Named encounters confirmed by the Steam achievement schema (app 2827750) and NDEV GAMES announcement posts. One entry comes from a dated player report and is labelled as such — nothing here is guessed from a video thumbnail.