Weapons are scored on five axes — Boss value, crowd control, single-target damage, utility, and ease of use — then tiered S (mandatory) through D (skip) based on a synthesis of KeenGamer, TechWiser, FinalBoss.io, 2UpSkill, G2A and community consensus.
Read the complete guide to all 7 Oni Armaments — what each one does, where to find it, and how to spend your Oni Stones.
Musashi carries a single katana throughout the game. The real weapon choice is the seven Oni Armaments. All katana skins are purely cosmetic and do not affect stats.
Boss value: shield/armor break, stamina drain, Break Issen setup
Crowd control: add clear, projectile denial, area control
Single-target damage: burst, safe damage, elite kill speed
Utility: healing, purple souls, ranged options, puzzles, trophies
Ease of use: learning curve, forgiveness, story-locked availability
Mandatory — defines the meta
The sentient gauntlet that consumes enemy souls and powers every other armament.
Paired hammers that tear through stamina, shields, and armor to open Break Issen windows.
A heavy lightning spear that slows time while charging and deletes elite health bars from a safe distance.
Core — strong in most loadouts
A spinning double-bladed naginata that raises a whirlwind, scattering groups and eating incoming projectiles.
A katana buff that strengthens normal attacks and generates purple souls for Oni Awakening.
Twin blades that generate yellow souls on hit, turning offense into passive healing.
Solid — situationally excellent
Armored boss / shielded elite: Earth-Shakers. Surrounded by adds: Wind-Whipper. Single-target burst / safe snipe: Flashing Void. Survival / healing: The Two Celestials. Oni Awakening build / endgame: Still Water. Flying / ranged targets: Oni Bow. Fire spread / dispersed groups: Firebird Flute.
Enhance your katana first — it raises Regular Attack, Issen, and Oni Armament Power together. Then pick 1-2 armaments to specialize: safe route Two Celestials → Earth-Shakers; aggressive route Wind-Whipper → Flashing Void; Awakening route Still Water. Do not spread Oni Stones evenly.
KeenGamer, TechWiser, FinalBoss.io, 2UpSkill, G2A, How To Video Game, Onimusha Game Wiki, PowerPyx, Maxroll, IGN, GameRant. Steam Community forum threads, note.com (JP) player essays, AppMedia (JP).
All rankings and quotes below are collected from published guides and public player forum threads on 2026-09-30. Nothing on this page is invented — where sources disagree, we show the disagreement.
Every published tier list ranks the armaments differently. This matrix shows each source's actual placement side by side — the disagreements are the interesting part.
| Armament | KeenGamer | TechWiser | FinalBoss.io | G2A | IGN | AppMedia |
|---|---|---|---|---|---|---|
| Earth-Shakers | S | S | #1 | Boss pick | Most useful | #2 |
| The Flashing Void | S | S | #4 | Burst pick | — | — |
| Wind-Whipper | A | S | #3 | Crowd pick | — | #3 |
| Still Water | S | A | #5 | Awakening pick | Easily missed | — |
| The Two Celestials | B | A | #2 | Safest pick | — | #1 |
| Firebird Flute | A | A | #6 | Fire pick | — | — |
| Oni Bow | Utility | B | n/a | Ranged pick | — | — |
Earth-Shakers
The only armament every single source places at or near the top. FinalBoss.io ranks it #1 overall; IGN calls it perhaps the most useful of all.
The Flashing Void
High S-tier in both KeenGamer and TechWiser; FinalBoss.io puts it fourth because safe burst matters less than stamina breaks in boss fights.
Wind-Whipper
S in TechWiser, A in KeenGamer, #3 in both FinalBoss.io and AppMedia — universal agreement as the crowd-control answer.
Still Water
The most contested armament: KeenGamer puts it in S for the endgame, FinalBoss.io drops it to fifth, and Steam players are actively debating whether it is the strongest of all.
The Two Celestials
The biggest split: KeenGamer rates it B, yet FinalBoss.io ranks it #2, G2A calls it the safest general pick, and AppMedia places it first overall.
Firebird Flute
Mid-tier everywhere it is ranked: useful fire tool, situational by nature. Maxroll separately calls it "somewhat lackluster" until its Charged Shot upgrade.
Oni Bow
KeenGamer separates it as pure Utility; FinalBoss.io excludes it from the six gauge-bound R1 armaments entirely — it competes for no gauge and works by its own rules.
Live discussions from the Steam Community
A player argues the item description literally says the sword becomes stronger, so Still Water should also raise base attack damage beyond its purple-soul generation. A reply pushes back sarcastically: if it is already the acknowledged strongest armament, buffing it further would leave no reason to use anything else.
The most active armament thread on the board (29 replies). Players struggle with Chain Issen timing; the practical community workaround is to grind it at the Practice Ground for the achievement, then abandon the mechanic entirely and use Oni Armament attacks for purple souls instead.
A player who finished the full game breaks down the demo: the release build has far more complex move sets, charged light and heavy attacks that cover distance, and a late-game ability that lets even light attacks reliably trigger Issen counters. Core combat stays defensive and reactive — only a few armaments enable aggressive play.
A reminder thread: do not forget Still Water, the last armament — using it makes the three-phase boss of a first playthrough much easier. Another reply cautions that some of the loudest opinions on the board come from players who never bought the game.
A player stuck doing zero damage in the final boss's second phase discovers the mechanic: that phase is armored. The community fix is to parry him and break the armor with the hammer-type armament (Earth-Shakers) or keep attacking until it falls off on its own.
A long-form Japanese player essay. On difficulty: it plays like Sekiro — the Swordplay difficulty genuinely demands learning boss patterns, with the easier Action difficulty as the fallback. On weapons: the writer delights that Wind-Whipper handles exactly like the classic Shippu, the first armament like the old Tensoujin, and that the Raizan / Enryu sword skins are pure fan service to series veterans.
No reputable site publishes a single upgrade order, so this is a ledger of each guide's stated position:
IGN
First Special skill = Two Celestials: Combo Strength — "the first Oni weapon that you'll get your hands on, and they're useful throughout the entire game." First Basic skill = Blazing State, because it raises Blue Soul drops.
Maxroll
"Grab the first upgrade" on Wind-Whipper — it raises damage and duration together. Firebird Flute is "somewhat lackluster" until Charged Shot; Flashing Void's Break Issen node is "a great way to farm Red Souls from regular enemies."
PowerPyx
Completionist counter-advice: "Hold off on spending Oni Stones until you can unlock Oni Vision: Treasures, Treasures 2 and Search Range." PowerPyx counts 54 Oni Stones in the world and states you will not get enough in one playthrough to fully upgrade the Gauntlet.
AppMedia (日文)
Publishes the only outright ranking: Two Celestials first (start-up invincibility and a guaranteed flinch), Earth-Shakers second, Wind-Whipper third.
"The Earth-Shakers are the strongest Oni Armament for most of the campaign."
Splits S-tier three ways: Flashing Void, Wind-Whipper and Earth-Shakers.
Only site with a strict 1-6 order: Earth-Shakers > Two Celestials > Wind-Whipper > Flashing Void > Still Water > Firebird Flute.
"For most players, The Two Celestials is the safest general pick" — while rating Earth-Shakers as more important for difficult bosses.
Calls the Earth-Shakers "perhaps the most useful of all the Oni Armaments", and Still Water the most easily missed.
The only Japanese-language outright ranking: Two Celestials first (start-up invincibility and a guaranteed flinch), Earth-Shakers second, Wind-Whipper third.
