Onimusha 2: Samurais Destiny
How to Get the "Mystery Item":
Go to the Dark Realm (the one where you got the fire sword) fight the 20 levels and on the last level there will be a fiery crack in the ground, examine it once to get the fire sword then examine it again to turn it into a beam of light. Enter the light and you will taken to a new level, there will be no monsters but a chest, open it to get the ''Mystery Item.''
Unlimited Arrows, Magic Armor and Bullets:
Clear the game on Hard mode and you then start the game with the Rekka-Ken, 20 000 Gold, 30 Secret Medicine's, 10 Talismans, Maxed-out Armor, Unlimited arrows and bullets, and always full magic.
Unlock Critical Difficulty:
Complete the Team Oni mini-game once to unlock Critical Difficulty level in the ''Special Features'' menu. In this difficulty, you can only kill enemies with a critical hit. Also, Ultimate Mode is disabled in this difficulty mode.
Unlock Easy Difficulty:
Die three times in the game and the Easy Difficulty level becomes available in the ''Special Features'' menu.
Unlock Extra Jubei:
Acquire the Fashionable Goods item and complete the game with an ''S'' ranking to unlock Extra Jubei in the ''Special Features'' menu. With this toggled on, you can start a new game as Jubei with a hip leather pantsuit and sunglasses that can be put on and off by pressing L2.
Unlock Extra Oyu:
Play the game repeatedly and make good alliances with the sub-characters until you acquire 100% of the scenarios in Scenario Route. Just keep doing this until all the scenarios have been revealed in the Scenario Route viewer. Once you accomplish that, Extra Oyu will be unlocked in the ''Special Features'' menu. With this toggled on, you can start a new game with Oyu with a stylish 70s outfit.
Unlock Green/Purple Realms:
Use the purple wedge on the on the purple portal at the top of Gifu castle to enter purple realm. The prize is the Fire Sword. Use the green wedge on the green portal found in a building near the water bridge areas to enter the green realm. The prize is the Red Necklace.
Unlock Hard Difficulty (US Version):
Complete the game on Normal difficulty to unlock the Hard difficulty in the ''Special Features'' menu.
Unlock Onimusha Team Mode:
Beat the game at least once to unlock this mode. This is a special mini-game that enables you to play a variety of characters through several previous sections of the game.
Unlock Puzzle Phantom Realm Mini-Game:
Collect all 18 artworks in the normal game and then complete it to unlock Puzzle Phantom Realm mini-game in the ''Special Features'' menu. In this game mode, there are no enemies. There are only Trick Treasure Boxes that unlock an artwork for each Trick Treasure Box that is opened.
Unlock Teaser FMV, Scenario Route, and Mini-Games:
Complete the game for the first time to unlock the Teaser FMV which is the preview movie of Onimusha 3, The Man in Black mini-game, and Team Oni mini-game.
Unlock Ultimate Mode:
Complete the game on Hard difficulty to unlock Ultimate Mode in the ''Special Features'' menu. Toggle Ultimate Mode on to start a new game with a Rekka-Ken sword, unlimited arrows, unlimited bullets, 30 Perfect Medicine, 10 Talisman, unlimited magic, and max level armors for Jubei. Plus all the sub-characters have unlimited sub-weapons.