- Silver health bar
Successfully complete the game to have a silver health bar.

- Jiggle Rachel's chest
Shake a Sixaxis controller to make Rachel's chest jiggle.

- Master Ninja mode
Successfully complete the game on the Mentor difficulty to unlock the Master Ninja difficulty.

- Mentor mode
Successfully complete the game on the Acolyte or Warrior difficulty to unlock the Mentor difficulty.

- Team Mission mode
Successfully complete the first mission in Story mode to unlock Team Mission mode.

- Trophies
Successfully complete one of the following tasks to get a trophy:

Bronze Trophies
Learned the Art of the Piercing Void	Successfully perform the Art of the Piercing Void Ninpo.
Dual Katana	Overcome 1000 enemies with the Dual Katana.
Izuna Drop Master	Successfully use the Izuna Drop on 1000 enemies.
Feat of Ultimate Destruction	Overcome 1000 enemies using Ultimate Techniques.
Kusari-gama master	Overcome 1000 enemies with the Kusari-gama.
Learned the Ultimate Technique	Successfully perform the Ultimate Technique.
Learned the Art of the Inferno	Successfully perform the Art of the Inferno Ninpo.
Feat of a Thousand Obliterations	Overcome 1000 enemies unsing Obliteration Techniques.
Guillotine Throw Master	Successfully use the Guillotine Throw on 1000 enemies.
Learned the Flying Swallow	Successfully perform the Flying Swallow technique.
Eclipse Scythe Master	Overcome 1000 enemies with the Eclipse Scythe.
Learned the Obliteration Technique	Successfully perform the Obliteration Technique.
Learned the Art of the Flame Phoenix	Successfully perform the Art of the Flame Phoenix Ninpo.
Learned the Izuna Drop	Successfully perform the Izuna Drop technique.
Vigoorian Flail Master	Overcome 1000 enemies with the Vigoorian Flail.
Learned the Shadowless Footsteps	Successfully perform the Shadowless Footsteps technique.
Rescued 100 ninja	Rescue 100 people in need.
Ultimate Ninpo Master	Chant 100 Ultimate Ninpo spells.
Learned the Invisible Path	Successfully perform the Invisible Path technique.
Dragon Sword Master	Overcome 1000 enemies with the Dragon Sword.
Enma's Fang Master	Overcome 1000 enemies with the Enma's Fang.
Learned the Ultimate Guidance	Successfully perform the Ultimate Guidance technique
Learned the Furious Be victorious ind	Successfully perform the Furious Be victorious ind technique.
Learned the Guillotine Throw	Successfully perform the Guillotine Throw technique.
Lunar Staff Master	Overcome 1000 enemies with the Lunar Staff.
Learned the Reverse Be victorious ind	Successfully perform the Reverse Be victorious ind technique.
Falcon's Talons Master	Overcome 1000 enemies with the Falcon's Talons.
Learned the Unrivaled Soaring	Successfully perform the Unrivaled Soaring technique.
Tonfa Master	Overcome 1000 enemies with the Tonfa.
Feat of a Hundred Slashes	Achieve a 100-hit combo with any weapon.
Learned to the Counter Attack	Successfully perform the Counter Attack technique.
Learned the Art of the Be victorious ind Blades	Successfully perform the Art of the Be victorious ind Blades Ninpo.
Learned the Flying Bird Flip	Successfully perform the Flying Bird Flip technique.
Gold Trophies
All missions successfully completed	Successfully complete all missions.
Platinum Trophies
Master of the Secret Arts	Acquire all trophies.

Bronze Trophies
Finishd Chapter 10	Successfully completed Chapter 10.
Finishd Chapter 7	Successfully complete Chapter 7.
Finishd Chapter 4	Successfully completed Chapter 4.
Finishd Chapter 13	Successfully complete Chapter 13.
Finishd Chapter 1	Successfully complete Chapter 1.
Silver Trophies
Cleared the Path Of The Warrior	Clear the game on the Path Of The Warrior.
Ayane mastered	Overcome 1000 enemies in Ayane.
Rachel mastered	Overcome 1000 enemies in Rachel.
Clear the Path Of The Mentor	Clear the game on the Path Of The Mentor.
Mastered the Path Of The Mentor	Master the Path Of The Mentor.
Mastered the Path Of The Warrior	Master the Path Of The Warrior.
Clear the Path Of The Master Ninja	Clear the game on the Path Of The Master Ninja.
Momiji mastered	Overcome 1000 enemies in Momiji.
Cleared the Path Of The Acolyte	Clear the game on the Path Of The Acolyte.
Mastered the Path Of The Acolyte	Master the Path Of The Acolyte.
Gold Trophies
Mastered the Path Of The Master Ninja	Master the Path Of The Master Ninja.

- Gold health bar
Successfully complete the game on the Master Ninja difficulty to have a golden health bar.

- Alternate costumes
Successfully complete the indicated task to unlock the corresponding costume:

Rachel's Assassin Rachel (short hair) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Rachel's Cutie Rachel (long hair) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Momiji's Dragon Sword (training) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Rachel's Dynasty Warriors (chosen) costume	Successfully complete the game on the Mentor difficulty.
Ayane's Sigma 1 (hooded) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Ryu's Dragon Clone Hayabusa (Ninja Gaiden Sigma) costume	Get the 'Master Ninja' rank on 10 Chapter Challenges.
Ryu's Devil Hayabusa (Fiend) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Ryu's Classic Hayabusa (Ryuken) costume	Successfully complete 10 missions in Team Mission mode.
Momiji's Dynasty Warriors (Sanzo Houshi) costume	Get the 'Master Ninja' rank on 30 Chapter Challenges.
Rachel's Sweet Rachel (curly hair) costume	Successfully complete the game on the Acolyte or Warrior difficulty.
Ayane's Dynasty Warriors (Son Shokou) costume	Successfully complete 20 missions in Team Mission mode.
Ryu's Dynasty Warriors Hayabusa (Choun Shiryu) costume	Successfully complete the game on the Mentor difficulty.

- Music test
Successfully complete the game to unlock the 'Music Test' option at the options menu.

- Chapter Challenge mode
Successfully complete the game to unlock Chapter Challenge mode.