Onimusha Way of the Sword contains 54 Oni Stone locations. Oni Stones are upgrade materials, needed to fully upgrade all skills for the Well-Rounded trophy & achievement. On the first playthrough you won’t find enough Oni Stones to fully upgrade the Gauntlet, but your skills carry over into New Game+ and you can collect the Oni Stones again for the last upgrades.
You can still free-roam and find all collectibles up until the Point of No Return before the final mission “The Clash At Rendaino”. If you keep a manual save from this point, then you can still clean up everything from there.
Collectibles & Upgrade Materials Overview:
Oni Stones
Oni Stone #1 – Reward for completing “Careful What you Wish For”.
Oni Stone #2 – Found in a chest in Kyoto guarded by a Cleaver Genma:
Oni Stone #3 – Reward for completing “A Strength in Refuge”
Oni Stone #4 – Reward for completing “Patching up the Pouch”
Oni Stone #5 – Reward for completing “What Lurks in the Shadows”
Oni Stone #6 – Found in a chest in an alcove in Kyoto Imperial Palace:
Oni Stone #7 – Reward for completing “Pale Lights in a Night Sky” Chance Encounter.
Oni Stone #8 + #9 – Reward for completing “The Roots of All Evil”.
Oni Stone #10 – Found in a chest West of the Gojo Street – East Spirit Mirror:
Oni Stone #11 – Found in a chest on the island in the West of Kyoto:
Oni Stone #12 – Reward for completing the second Oni Portal.
Oni Stone #13 – Reward for completing “Shadows Fall”.
Oni Stone #14 + #15 – Reward for completing “Ace Archer: Kiyomizu-dera Temple” Chance Encounter.
Oni Stone #16 – Reward for completing “A Tempest at the Temple”.
Oni Stone #17 + #18 – Reward for completing the “Something in the Water” Mystery of Kyoto.
Oni Stone #19 + 20 – Found in the Hidden Oni Treasure #1 chest.
Oni Stone #21 – Reward for completing “Noisy Neighbors”.
Oni Stone #22 + #23 – Found in the Hidden Oni Treasure #2 chest.
Oni Stone #24 – Reward for completing “The Demon on the Mount”.
Oni Stone #25 – Reward for completing the 3rd Oni Portal.
Oni Stone #26 – Reward for completing the “The Odd Couples” Chance Encounter.
Oni Stone #27 + #28 – Reward for completing the “The Faceless” Mystery of Kyoto.
Oni Stone #29 + #30 – Reward for completing the “Worm-ly Ways” Mystery of Kyoto.
Oni Stone #31 – Found in a chest in the Cave level of Mount Oe after defeating the second Genma blocking the Oni-kui Mushi Barrier:
Oni Stone #32 +#33 – Reward for completing the “Ace Archer: Mount Oe” Chance Encounter.
Oni Stone #34 – Found in a chest heading up from the Castle Courtyard to the Cave, first outcrop on the right:
Oni Stone #35 + #36 – Reward for completing the “A Fishy Story” Chance Encounter.
Oni Stone #37 – Found in a chest in an alleyway South of the Kiyomizu-kera Slope Spirit Mirror:
Oni Stone #38 – Found in a chest just North of Emma’s Hall:
Oni Stone #39 + #40 – Found in a chest South of Yasaka Shrine Spirit Mirror:
Oni Stone #41 – Found in a chest upstairs in a house just East of the Shijo Street Spirit Mirror:
Oni Stone #42 + #43 – Reward for completing “In the Light of an Icy Moon”.
Oni Stone #44 – Found in a chest East of the Temple Spirit Mirror in Arashiyama:
Oni Stone #45 – Found in a chest West of the Shijo Street Spirit Mirror:
Oni Stone #46 – Found in a chest North of the broken bridge in the Southwest of Kyoto:
Oni Stone #47 + #48 – Reward for completing the “Ace Archer: Arashiyama” Chance Encounter.
Oni Stone #49 + #50 – Found in the Hidden Oni Treasure #5 chest.
Oni Stone #51 – Found in a chest Southeast of the Kiyomizu-dera Slope Spirit Mirror:
Oni Stone #52 – Found in a chest in the bamboo forest at the South of Kyoto:
Oni Stone #53 + #54 – Found in a chest in the same room as the Keep Area Spirit Mirror in Shanoah Castle:
For all other collectible refer to the Onimusha Way of the Sword Collectible Locations Guide.
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