Maximum health
Pause the game play and push Up, Down, Up, Down, X, X, X buttons on your
Xbox controller.
Get additonal 100 points:
Pause the game play, then hold White + Black and push Right, Right,
Right, Left on your Xbox controller.
Increase offensive power
Pause the game play, then hold R + White and push Up, Down, Up, Down.
Release R + White and push X, X, X buttons.
Maximum Kuji
Pause the game play, then hold L + R triggers and push Left, Left, Left,
Right, X buttons on your Xbox controller.
Additional Kuji to meter
Pause the game play and push Left, Left, Left, Right, X
buttons on your Xbox controller.
Enable special abilities
Pause the game play, then hold R + Black and push Up, Up, Down, Down.
Release R + Black and push X, X, L buttons on your Xbox controller.
Show score and time
Pause the game play and push Right, Right, Right, Left.
Unlock B-side dialogue option in the Options/Audio/Language menu:
Go to the title screen, hold L + R triggers and push Down, X, X, Up, X, X,
Left, X, X, Right, X, X on your Xbox controller.
Rikimaru's Through The Portal extra stage
Go to the title screen, push White, Up, Black, Down, L, R, Left on your
Xbox controller.
Unlock all multi-player characters and Tesshu in story and co-op modes:
Go to the title screen, hold White + Black and push Up, Right, Left, Down.
Release White + Black and push L + R.
Unlock all story mode missions
Go to the stage selection screen, push White, White, L, R, Right, X,
click Left thumb-stick, click Right thumb-stick on your Xbox controller.
Unlock all mission layouts
Go to the stage selection screen, click Right thumb-stick, click
Left thumb-stick, push L, R, White, Black on your Xbox controller.
Unlock all items
At the item selection screen, hold L + R and push Up, Down, Up, Down,
X, X, X, Left, Right, Left, Right, X, X, X on your Xbox controller.
Increase items
At the item selection screen, hold L + R and push Up, Left, Down,
Right, X, X, X on your Xbox controller.
Unlimited item capacity in 6 slot:
At the item selection screen, hold L + R + White and push Up, Up,
Down, Down, Left, Right, Left, Right on your Xbox controller.
Rikimaru's Through The Portal extra stage
Finish the game with all 3 characters.
Unlock B-side dialogue option in the Options/Audio/Language menu:
Finish all Rikmaru and Ayame's stages and reach an "Expert Ninja" rank
and complete the Tesshu's missions and reach a "Professional" rank.
Ninja Dog multi-player character:
Reach a "Grand Master" rank in all of Ayame's missions.
Semimaru multi-player character:
Reach a "Grand Master" rank in all of Rikimaru's missions.
Unlockables:
Reach a Grand Master rank in mission 1: Get Super Shuriken
Reach a Grand Master rank in mission 2: Get Exploding Arrows
Reach a Grand Master rank in mission 3: Get Chameleon Spell
Reach a Grand Master rank in mission 4: Get Flash Bomb
Reach a Grand Master rank in mission 5: Get Dog Bone
Reach a Grand Master rank in mission 6: Get Invisibility Spell
Reach a Grand Master rank in mission 7: Get Fire Spell
Reach a Grand Master rank in mission 8: Get Viper Potion
Reach a Grand Master rank in mission 9: Get Ninja Armor
Reach a Grand Master rank in mission 10: Get Fireworks
Reach a Grand Master rank in mission 11: Get Decoy Whistle
Reach a Grand Master rank in mission 12: Get Binding Spell