Beast of Reincarnation: All 16 Bosses in Order

Six names are settled, and now so is the order

This page used to open by saying no boss name had been read off the game client. That stopped being true on 5 August, and the correction goes at the top rather than quietly into the table below. Steam serves this game’s achievement manifest publicly: one endpoint returns the internal ids, another returns the shipped display names, and joining them puts an id that names the animal in Japanese beside the localisation name in one first-party place. The pairing rule is the same for all six — the id names the animal, the display name is that animal’s Latin genus or its Greek myth. What is deliberately *not* printed in the table below is how each row was placed, because that moves: a row pairs itself mechanically only while its unlock percentage is unique, and those percentages drift daily, so a row can be mechanically confirmed one morning and ambiguous the next. The live grade for each is rendered on the achievements page rather than frozen into prose here. The order, which this page called unresolved for a week, is settled further down.

How far each name is from settled

This is the part of the page most likely to be wrong, which is why it sits directly under the names that are settled rather than at the back. Automatic captions substitute something plausible for a proper noun they have never seen, so a name that only ever reaches us through a caption is not evidence of anything. A name a creator typed is better evidence, because they were looking at the screen while they typed it — and it is still not the game’s own text. Nothing in this table has been read off the client — but since 5 August, six boss names elsewhere have been. The game’s own achievement manifest, served by Valve, pairs an internal id naming the animal in Japanese with the shipped localisation name, and it settles six of them. That evidence sits one section up; this table covers the names it does not reach. Everything below cites a YouTube video id and a timestamp; the ids are listed against their creators in the sources at the foot of the page.

The fights that have their own page, and the ones that do not

Three of these fights have enough behind them to be worth reading on their own, and the difference is entirely about what somebody filmed. Rangifer was recorded independently by two creators on the same day who describe the same loop without having seen each other; the paired fight is the only later boss anyone has filmed with commentary at all; and Ursa is the one name here corroborated by a writer who played the game and had never seen the internal id we derived it from. The rest are a name, a slot in the order and an unlock percentage — which is a row, not an article. They stay rows until somebody films one, because publishing four pages that restate the same two facts is how a site whose whole claim is source-checked accuracy turns into one of the cluster sites this page was written against. The roster below says which is which, and every row with no page says why it has none: the four reasons are not the same reason, and the difference is worth more than a blank.

The roster, in clear order

7 of 8 have a page

Art and unlock rates are served by Valve from the shipped game’s own achievement manifest and re-read daily, so the percentages below move on their own. The chip on each row is how the name was established — not how confident this page sounds about it. Four rows have no page, and each one says why.

1 of 7 · 54.1% of owners

Rangifer's End

Deer — 鹿 (shika)

confirmedRead the fight →

2 of 7 · 44.7% of owners

Lacerta's End

Salamander

confirmedRead the fight →

3 of 7 · 36.1% of owners

Taurus's End

Ox — 牛 (ushi)

confirmedRead the fight →

4 of 7 · 30% of owners

Corvus's End

Crow

confirmedRead the fight →

5 of 7 · 27.1% of owners

Ursa's End

Bear — 熊 (kuma)

corroboratedRead the fight →Corroborated from outside

6 of 7 · 27% of owners

Shidou & Nue

Not an ACH_NUSHI_ id — outside the naming rule

first-partyRead the fight →

7 of 7 · 26.8% of owners

Erymanth's End

Wild boar

inferredRead the fight →Corroborated from outside

Unplaced

ACH_NUSHI_KU

Not established

unplacedWhy there is no page

The order you fight them in, and why it is now printable

This page spent a week saying the order was not established, because the only evidence was creator boss lists that disagreed with each other and none of them said where in the run a fight sat. That changed on 7 August, and not because a better list appeared — because a second, completely unrelated kind of evidence turned out to say the same thing. ExoGhost’s no-commentary 100% run carries twenty-one typed chapter markers, which is one player’s record of what he fought and in what order. Set beside it, Valve’s global unlock percentages are a population statistic: every owner of the game contributes, and a boss reached later is necessarily cleared by fewer people, so a correct order descends and a wrong one does not. Read the Nushi names off the achievement list in ExoGhost’s order and the percentages fall at every step, with no exceptions and no ties to argue about. The two sources share no author, no method and no data. That agreement is the claim; neither half would be enough alone.

Final boss spoiler: what two press walkthroughs agree on

Stop before this section if you do not want the ending fight named. IGN and Eurogamer now give independent written walkthroughs for the last fight, and their overlap is enough to publish the practical shape without borrowing either route. The boss is Mikoto transformed into the Beast of Reincarnation, the health bar shows an infinite level rather than a number, and both guides treat the fight as a stamina-and-parry test rather than a weakness puzzle.

• No known elemental weakness is published. Eurogamer recommends Flame resistance because the Beast uses Flame-element attacks; IGN instead leans on status application and names Camellia and Koo’s Sakura: Javelin as one workable route. That is advice, not a required build.
• Both guides describe a mid-fight reset. IGN places the amber-sword cutscene at 50% HP and says the Beast returns to full health; Eurogamer separately describes the first-phase lethal prompt dispelling the shield, then the health bar refilling.
• The danger phase is the loss of tools, not a new move set. IGN says Nushi Skills, Blade Arts, Finishers, Bloom Arts and Entanglement Overdrive are temporarily unavailable; Eurogamer says Blade Arts and Koo’s Bloom Arts disappear for part of the second phase and advises parrying through it.
• Both guides name Blossoms of Reincarnation as the comeback attack near the end. Use it when the meter is available; do not read this as a damage value, because neither guide publishes one.

What the health bars say, in the game’s own text

Six single frames from that run, each taken at a second when the fight’s name bar is up. This is the strongest evidence on the page and the cheapest to check: the name and the level in these bars are the shipped game’s own text, not a creator’s typing and not a machine caption, which is the standard every other name on this page fails. Two of them also settle something that was outstanding. Fextralife publishes Erymanth at Lv. 47 with no provenance behind the number, and AllThings.How puts Ursa at Lv. 46 — both figures we declined to repeat. The game’s own bars read Lv. 47 Erymanth and Lv. 46 Ursa, so those two numbers are now confirmed rather than repeated. What this does not reach: a level is one observation from one player’s run, and nothing here establishes whether these fights scale to the player elsewhere.

What is still not established: the count, the levels and the spellings

The order is not the same claim as the roster, and the roster is still open. Two creators have published complete boss lists and they do not agree — one chapters 21 entries, the other 22, with different repeat counts for several fights — so there is still no count of bosses here that could be checked. The table above is one run’s sequence corroborated by unlock rates; a fight that is optional, missable, or skipped by that player would not appear in it at all, and nothing published would reveal the omission. Boss levels are published by competitor wikis with no per-claim provenance behind them, so they are not repeated here beyond the ones legible in the stills above, and every spelling is in the state described at the top of this page.

• The order rests on unlock percentages, which are re-synced daily and could stop descending. The build asserts they still do, so this section becomes a build failure rather than a quietly false page if that ever happens.
• And a warning about what already ranks for these searches: one site publishes a roster of "Ancient Treant, Magma Golem, Storm Roc, Abyssal Kraken, Void Lich", and assigns them Wind and Earth elements. None of those bosses exists, and the game has neither of those elements. That is not a stale page or a bad transcription — it is a boss list written without the game.