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Onimusha 3: Demon Siege (PC)

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Easy difficulty

Intentionally lose the game two times under the normal difficulty setting.

Hard difficulty

Successfully complete the game under the normal difficulty setting.

Michelle's alternate costume

Successfully complete the game under the normal difficulty setting.

Michelle's second alternate costume

Successfully complete the game with an "Onimusha" rank.

 PlayStation2  Play the game with a memory card with a saved game from Onimusha Blade Warriors.

Jacques' alternate costume

Successfully complete the game under the normal difficulty setting with a high score as Jacques. Alternately, successfully complete the game as Samanosuke's alternate costume.

Samanosuke's alternate costume

Successfully complete the game under the normal difficulty setting with a high score as Samanosuke. Alternately, successfully complete the game as Jacques' alternate costume.

Panda costume

Successfully complete secret training mode.

 PlayStation2  Play the game with a memory card with a saved game from Onimusha Blade Warriors.

Alternate ending sequence

Increase all seven Haori of Ako to the maximum. This requires all Kodama to be found.

Critical (Issen) mode

Successfully complete the game under the hard difficulty setting. In this mode, only critical hits can kill opponents.

Devilish mode

Successfully complete the game in Critical (Issen) mode.

Ultimate mode

Successfully complete the Oni shooting mini game. The game will start with Sam having the Bishamon sword; Jacques having his best Oni Musou; unlimited arrows, bullets, unlimited Oni power, thirty Medicines, and ten Talismans.
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Bishamon sword

Successfully complete the game with the "Onimusha" rank. Alternately, get the Bishamon sword in the Phantom Realm in Honnouji when Sam goes to the past. To find it, go to the save location at the foot of the stairs to the temple, then look to your upper left to find the hanging man. Approach him to be sent to the Phantom Realm. Collect eight Red Orbs to unlock the chest that contains the Bishamon sword.

Oni Musou

Have Jacques go through the Phantom Realm in Honnouji.

Adventures of Heihachi (Heihachi Buraiden) mode

Successfully complete the game. Heihachi (Honda) is now selectable.

Genma Puzzle mini game

Solve all the puzzles in the game.

Secret training mode mini-game

Successfully complete normal training mode, then complete the game.

Oni Shooting mini-game

Successfully complete the game under the normal difficulty setting.

Ako's Black Haori

Successfully complete Issen/Oni training.


Bravery: Successfully complete the game without saving.
Critical: Kill over 40% of your enemies with critical hits.
Defense: Take less than 5,120 damage.
Explorer: Find all 23 Tengu chests.
Offense: Kill over 3,000 enemies.
Speed: Have a completion time of less than 5:00:00.




Defeating Guard Dog

Note: This was done under the normal difficulty setting. First, stock up on magic for all your weapons. Then, stock up on all the Purple Souls. At the beginning, jump behind him after he attacks. Then, just waste the magic on him. Use every weapons magic until you do not have any more. After that, use regular attacks. Watch out for the ice attack. Most of the time the thunder magic from him is off target. After a few regular attacks, transform into the Onimusha and attack him hard. However, do not use the mega attack yet. After a few attacks, just before your magic runs out use the mega magic attack on him. If he is not defeated, then just attack him a few more times.

Defeating Two Marquless

When playing as Michelle, go further behind near the skull door and throw some grenades on them.

Kill all Genma onscreen

This can be done without charging during an Onimusha. Also, block Issen works during an Onimusha and takes out all enemies.

Regain health

Equip Ako's White Haori then stand still.

Saving health

When in the Dark Realm at Honnoji, after defeating enemies on a floor of the realm if you have low life equip Ako's white vest to heal. This will save lots of first aids or healing items you will still have enough for Nobunaga.

Bypass Dark Realms

Any of the three Dark Realms can be easily bypassed. This requires some skill, Ako's Purple Vest, all weapons for the character, and all weapons been completely enhanced. Whether or not the gauntlet is completely enhanced is irrelevant. Before entering the Dark Realm, equip either Chigo (for Samanosuke) or Hyosai (for Jacques). The enemies that attack will appear in multiple waves. Just wait for all enemies to appear, then execute one magic attack. Absorb all the souls that appear. Ako's Purple Vest should allow you to do this as many times as necessary. However, if you are fighting large demons, you may need to get up close with either the Tenso (for Samanosuke) or the Enja (for Jacques). Note: A crucial part of this strategy is absorbing the souls. If you feel that you need Ako's Blue Vest as well, make sure to switch back and forth as appropriate. Also, it is much easier to go straight for the bottom part of the Dark Realm that you are in, as the tougher enemies are down there first. By doing this, you can use your magic efficiently on the tougher enemies and not have to worry about the weaker ones.

Unlimited Genma Souls

Note: This trick only works for Samanosuke. Once you obtain the Ten-Point Slash Training Scroll, play under the beginner difficulty setting multiple times. Each time you finish, you should come away with one bar, or close to it. Do this until you have the desired amount of souls, or until you max all your equipment.

Use less magic during magic attacks

This trick requires the gauntlet for Sam/Jacques to be at least level 2. Charge up the gauntlet to at least two and unleash a magic attack. With the purple vest on Ako you can do about five magic attacks in a row instead of four.

Hidden Secret Medicine

When you are helping Michelle save her comrades, keep pushing the ball as far as possible. You will see a light in the water.

Easy Red Souls

Ako's Red Haori is required this trick. When you get to the port town of Sakai and the demons come out to play, equip Ako's Red Haori. Start killing demons with Issen or Block Issen. Clearing each area of demons should give at least three quarters of a full soul bar. The port area is most lucrative (one full bar every time because of the fish demons). The Issen is not necessary, but it is most effective. You can upgrade all of you present weapons to full with this trick, since one level 2 weapon/equip requires about ten bars to level up to maximum.


Strategy guides from GameFAQs

Published strategy guides

Trainer: All extras unlocked by aSx

Trainer: +11 by aSx