Tenchu: Return From Darkness

Restore health:
Press Start to pause game play, then press Up, Down, Up, Down, X(3).
WhiteT6063.

All characters:
Hold White + Black and press Up, Right, Left, Down at the "Press Start" screen. Release White + Black then press L, R. All multi-player mode characters will be unlocked, as well as Tesshu in story and co-op modes.
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All story mode missions:
Press White(2), L, R, Right, X, click Left Analog stick, click Right Analog-stick at the mission selection screen.
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All layouts:
Click Right Analog-stick, click Left Analog-stick, press L, R, White, Black at the mission selection screen.
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Increased offensive power:
Press Start to pause game play, then hold R + White and press Up, Down, Up, Down. Release R + White and press X(3).
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All ninja items:
Hold L + R and press Up, Down, Up, Down, X(3), Left, Right, Left, Right, X(3) at the item selection screen.
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Increased ninja items amount:
Hold L + R and press Up, Left, Down, Right, X(3) at the item selection screen .
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Unlimited item capacity:
Hold L + R + White and press Up(2), Down(2), Left, Right, Left, Right at the item selection screen, then release only White and press X(3).
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Through The Portal bonus mission:
Press White, Up, Black, Down, L, R, Left at the title screen to unlock Rikimaru's Through the Portal bonus mission.
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New special move:
Press Start to pause game play, then hold R + Black and press Up(2), Down(2). Release R + Black and press X(2), L, R.
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Increase Kuji by one:
Press Start to pause game play, then press Left(3), Right, X to increase your Kuji meter by one.
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Full Kuji:
Press Start to pause game play, then hold L + R and press Left(3), Right, X.
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Display score:
Press Start to pause game play, then press Right(3), Left.
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Increase score:
Press Start to pause game play, then press hold White + Black and press Right(3), Left to get 100 more points.
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B-side commentary:
Hold L + R and press Down, X(2), Up, X(2), Left, X(2), Right, X(2) at the title screen. Enter the options screen and select "Audio", then "Language". Select the "B-Side" option to hear a third commentary track. Note: This is only available in the North American and European version of the game. Alternately, get an "Expert" or higher rank for all of Rikmaru and Ayame's missions and a "Professional" rank in all of Tesshu's missions.
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Ninja Dog multi-player character:
Get a "Grand Master" rank in all of Ayame's missions.

Semimaru multi-player character:
Get a "Grand Master" rank in all of Rikimaru's missions.
Ryan Menzul.

Binding Spell:
Get a "Grand Master" rank in mission 12.

Chameleon Spell:
Get a "Grand Master" rank in mission 3.

Decoy Whistle:
Get a "Grand Master" rank in mission 11.

Dog Bone:
Get a "Grand Master" rank in mission 5.

Exploding Arrows:
Get a "Grand Master" rank in mission 2.

Fire Spell:
Get a "Grand Master" rank in mission 7.

Fireworks:
Get a "Grand Master" rank in mission 10.

Flash Bomb:
Get a "Grand Master" rank in mission 4.

Invisibility Spell:
Get a "Grand Master" rank in mission 6.

Ninja Armor:
Get a "Grand Master" rank in mission 9.

Super Shuriken:
Get a "Grand Master" rank in mission 1.

Viper Potion:
Get a "Grand Master" rank in mission 8.

Hint: Easy kills around corners:
When you have your back against a wall and are peeking around a corner, if there is a guard there, toss a poison rice ball (the one with the green leaf) by pressing Y. As soon as the guard picks it up, run around the corner and Stealth Kill. It does not matter if he is facing you, but try to kill him before he eats it. By doing this you can use the same rice ball on multiple guards.
bacon001.

Glitch: Slide down stairs:
In the Gohda's mansion level (where you kill Hamada), as either Rikimaru or Ayame play until the end of the level. When you get to the stairs that lead to the golden screened-rooms, do not go down the stairs. Instead, hop onto the rail above the stairs and walk off. Do not jump off. You will slide down the stairs like a slope until you reach the bottom.
Bhree.