Ninja Gaiden Sigma Plus
Alternate costumes
Successfully complete the game on the indicated difficulty to unlock the corresponding costume:
- Biker (Rachel): Hard difficulty
- Doppelganger (Ryu): Normal difficulty
- Formal Attire (Rachel): Normal difficulty
- Legendary Ninja (Ryu): Normal difficulty
- The Grip Of Murder (Ryu): Very Hard difficulty
Bonus difficulties
Successfully complete the indicated task to unlock the corresponding difficulty:
- Master Ninja: Successfully complete the game on the Very Hard difficulty.
- Ninja Dog: Die three times on the Normal difficulty.
- Very Hard: Successfully complete the game on the Hard difficulty.
Trophies
Successfully complete one of the following tasks to get a trophy:
- True Ultimate Ninja (Platinum): Collect all trophies.
- Dragon Sword Master (Bronze): Defeat 1,000 enemies with the Dragon Sword.
- Vigoorian Flail Master (Bronze): Defeat 1,000 enemies with the Vigoorian Flail.
- Dabilahro Master (Bronze): Defeat 1,000 enemies with the Dabilahro.
- War Hammer Master (Bronze): Defeat 1,000 enemies with the War Hammer (Hayabusa).
- Kitetsu Master (Bronze): Defeat 1,000 enemies with the Kitetsu.
- Dual Kitana Master (Bronze): Defeat 1,000 enemies with the Dual Kitana.
- Lunar Staff Master (Bronze): Defeat 1,000 enemies with the Lunar Staff.
- Wooden Sword/Unlabored Flawlessness Master (Bronze): Defeat 1,000 enemies with the Wooden Sword/Unlabored Flawlessness.
- Projectile Weapons (Bronze): Defeat 100 enemies with projectile weapons.
- Feat of Ultimate Destruction (Bronze): Use the strongest Ultimate Technique on 100 enemies.
- Izuna Drop Master (Bronze): Use the Izuna Dro on 100 enemies.
- Guillotine Throw Master (Bronze): Use the Guillotine Throw on 100 enemies.
- Fire Wheels Master (Bronze): Use Fire Wheels successfully 100 times.
- Inferno Master (Bronze): Use Inferno successfully 100 times.
- Ice Storm Master (Bronze): Use Ice Storm successfully 100 times.
- Inazuma Master (Bronze): Use Inazuma successfully 100 times.
- Cleared The Way of the Ninja (Bronze): Completed Chapter 1.
- Cleared 2 Trials (Bronze): Clear all Ninja Tutorials and Path to the Ultimate Ninja.
Additionally, there are 32 secret trophies:
- Rachel Master (Bronze): Defeat 500 enemies with Rachel.
- Sorcery Master (Bronze): Use Sorcery successfully 100 times.
- Cleared The Fiend Hunter (Bronze): Completed Chapter 5.
- Cleared Tairon Under Alert (Bronze): Completed Chapter 10.
- Cleared The Caverns (Bronze): Completed Chapter 15.
- First Clear (Bronze): Finish all chapters of the game.
- Cleared Hard (Bronze): Finish all chapters of the game on Hard.
- Cleared Very Hard (Bronze): Finish all chapters of the game on Very Hard.
- Cleared Master Ninja (Gold): Finish all chapters of the game on Master Ninja.
- Rookie Scarab Hunter (Bronze): Obtain a scarab.
- Lead Scarab Hunter (Bronze): Obtain 10 scarabs.
- Master Scarab Hunter (Bronze): Obtain 30 scarabs.
- Legendary Scarab Hunter (Silver): Obtain all scarabs.
- Ninja Carnage (Bronze): Kill every enemy in an Ambush.
- Ninja Slaughter (Bronze): Kill every enemy in 6 Ambushes.
- Ninja Massacre (Silver): Kill every enemy in all Ambushes.
- The Journey to Master Ninja (Bronze): Get Master Ninja on all chapters.
- The Long Journey to Master Ninja (Bronze): Get Master Ninja on all chapters on Hard.
- The Really Long Journey to Master Ninja (Bronze): Get Master Ninja on all chapters on Very Hard.
- Thanks for playing! -from Team NINJA (Gold): Get Master on all chapters on Master Ninja.
- Heroes Never Give Up (Bronze): Be a Hero 100 times.
- Thanks for Finding Me! (Bronze): Find all Team NINJA logos.
- Just Put Me On (Bronze): Hold 99,999 Yellow Essence.
- Over 10,000,000 Karma (Bronze): Get 10,000,000 Karma.
- Over 50,000,000 Karma (Silver): Get 50,000,000 Karma.
- Cleared 6 Trials (Bronze): Clear Unrivaled Meeting, Nightmarish Phantasms, Abysmal Lair, and Secrets of Shooting
- Cleared 10 Trials (Bronze): Clear Secrets of Fighting, Military Destruction, Descent of the Fiends, and Captivating Goddesses
- Cleared 14 Trials (Bronze): Clear Desperation, Fateful Confrontation, Battlefield of the Abyss, and Giants of the Underworld
- Cleared All Trials (Bronze): Clear Unearthed Challenge and Eternal Legend
- Coin Aficionado (Silver): Obtain 50 coins in Ninja Trials
- Coin Collector (Silver): Get coins in all Ninja Trials.
- Coin Master (Gold): Get platinum coins in all Ninja Trials.