CheatCodes.com has all the official Genma Onimusha Xbox cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Friday May 24, 2013 for Genma Onimusha are shown below.
Collect all 20 Flourites (blue rocks) in the game. Complete and save the game. A new speed trail mini-game will be unlocked. Successfully complete the mini-game to unlock an option to play the regular game with the Bishamon Sword, infinite ammunition, 99 Soul Absorbers, and automatic magic regeneration.
South Area Map Level 1: 1-3-6 Level 2: 6-1-4 West Area Map Level 3: 5-7-2 East Area Map Level 4: 3-6 Get it Jewel
To kill the demon doll Ayame you first need to beat the oni spirits mini game. Then you start a new game on ultimate mode with the bishamon sword. Find Ayame the demon doll and swipe at her with the bishamon sword.
Purposely let a demon get a green soul, and then kill it. It will make the demon drop more souls for you to absorb.
To unlock Samanosuke's second costume, beat the game once on Difficult.
To unlock the Oni Spirits mini game, collect 20- 29 pieces of Flourite. A new mini-game will be available at the start menu.
To unlock Kaede's second costume, a sort of demon dress, collect all 30 Flourites.
Defeat the game in under three hours to unlock Difficult Mode.
Successfully complete the game on the hard difficulty setting with any rank except for "S" to unlock ultimate mode for the hard difficulty setting.
In the Demon Realm (just after you destroy the Ultimate Creation) is a save mirror and three doors. Go to the door that resembles an iron gate. It will not open at first. Use the Bishimon O flute on it and enter. Go to the Bishimon Sword jutting out of the Skull Demon wall object and take it. It is more powerful than all three of your weapons put together, and it has speed. The sword also has an unlimited supply of magic.
There are two places in there game where a very strange man hanging from the ceiling by his feet, stares at you and ignores you. Later in the game, after you use the Evil Plate and open the door, he will talk to you. The man will now take you (whenever desired), to the Dark Realm. In the Dark Realm, killing monsters until two portals open; one to go up and one to go down. Keep going down to the last level (20th) while collecting all the items in route. There will be no monsters to kill on the last level. Open the box to get the Bishamon O flute. Keep the flute just before the last fight with the Demon King.
Successfully complete the game and save. Choose to start a new game and a "Special Report" option will be available. This allows a small sequence from the game's sequel to be viewed.
Successfully complete the game and save. Choose to start a new game and a "Shinnosuke Normal/Special" option will be available. The special version will put Samanosuke in a Panda costume with a baby panda in a front pocket clapping his hands. The Panda suit will be shown in most short clips but not all FMV sequences. Successfully complete the game with an "S" rank to unlock a new costume for Kaede.
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