I've got all but 4, they are secret of course, so shhh
Mastered Reverse Wind - LT and move- 5G
Mastered Furious Wind - do what the scroll says - 5G
Mastered Shadowless Footsteps - do what the scroll says- 5G
Mastered Flying Swallow - jump forward and press Y- 5G
Mastered Obliteration Techique - cut off a limb and press Y - 5G
Mastered Ultimate Technique - hold Y and release (once you glow) -5G
Mastered Ultimate Guidance - do what the scroll says - 5G
Mastered Counter Attack - LT, then when enemy hits you, X/Y - 5G
Mastered Unrivaled Soaring - do what the scroll says - 5G
Mastered Invisible Path - do what the scroll says - 5G
The Art of Inferno - use this ninpo - 5G
The Art of the Wind Blades - use this ninpo - 5G
The Art of the Flame Phoenix - use this ninpo - 5G
The Art of the Piercing Void - use this ninpo - 5G
Vanquished Alexei - defeat him in battle- 15G
Vanquished Volf - defeat him in battle- 15G
Vanquished Zedonious - defeat him in battle- 15G
Vanquished Elizebet - defeat her in battle - 15G
Vanquished Genshin -defeat him in battle - 15G
Way of the Acolyte - complete acolyte difficulty - 100G
Way of the Warrior - complete warrior difficulty - 100G
Way of the Mentor - complete mentor difficulty - 100G
Way of the Master - complete master difficulty - 100G
Karma of the Warrior - collect 10 crystal skulls - 20G
Karma of the Mentor - collect 20 crystal skulls - 20G
Karma of the Master - collect 30 (all) crystal skulls - 20G
Feat of a Hundred Slashes - get 100 hit combo (any weapon) - 20G
Feat of a Thousand Obliterations - kill 1000 enemies with OT - 20G
Feat of a Ultimate Destruction - kill 1000 enemies with UT - 20G
Dragon Sword Master - complete game using only Dragon Sword - 5G
Lunar Staff Master - complete game using only Lunar Staff - 5G
Falcon's Talons Master - complete game using only Falcon's Talons - 5G
Dual Katana Master - complete game using only Dual Katana - 5G
Kusari Gami Master - complete game using only Kusari Gama - 5G
Eclipse Scythe Master - complete game using only Eclipse Scythe - 5G
Tonfa Master - complete game using only Tonfa - 5G
Vigoorian Flails Master - complete game using only Vigoorian Flails - 5G
One of White - completed first test of valor - 15G
Two of Black - completed second test of valor - 15G
Three of Blue - completed third test of valor - 15G
Four of Green - completed fourth test of valor - 15G
Five of Yellow - completed fifth test of valor - 15G
Six of White - completed sixth test of valor - 15G
Seven of Red - completed seventh test of valor - 15G
Eight of White - completed eighth test of valor - 15G
Nine of Violet - completed ninth test of valor - 15G
Completed Chapter 1 - completed chapter 1 - 10G
Completed Chapter 2 - completed chapter 2 - 10G
Completed Chapter 3 - completed chapter 3 - 10G
Completed Chapter 5 - completed chapter 5 - 10G
Completed Chapter 7 - completed chapter 7 - 10G
Completed Chapter 9 - completed chapter 9 - 10G
Extinguished the Flame - kill Zedonious again - 15G
Silenced the Storm - kill Volf again - 15G
Diffused the Lightning - kill Alexei again - 15G
Staunched the Blood - kill Elizebet again - 15G
Redeembed Genshin - beat him for the 4th time - 15G
Ended the Infernal Reign - defeated Dagra Dai - 15G
Indomitable Spirit - hit continue 100 times - 5G
Four Missions Completed - complete four missions - 30G
Eight Missions Completed - complete eight missions - 30G
First Medallion - obtained a medallion in a survival mission - 20G
Acolyte of Missions - complete all missions on Acoltye difficulty - 20G
Warrior of Missions - complete all missions on Warrior difficulty - 20G
Secret - most likely Mentor of Missions (20G?)
Secret - most likely Master of Missions (20G?)
All Bronze - get all bronze metals in mission mode - 30G
Secret - possibly get all silver (30G)
Secret - possibly get all gold (30G)
Successfully complete the following tasks to get the corresponding weapon:
Dragon's Claw and Tiger's Fang: In Chapter 4, take those weapons from the glass display case in the first room at the Statue Of Liberty's base.
Eclipse Scythe: In Chapter 6, defeat Volf.
Falcon's Talons: In Chapter 2, you will see another building just before you go to the Dragon Shrine. Kill the ninjas there.
Kasari-Gama: In Chapter 5, a dead ninja will be holding this weapon on the second bridge you reach on your right.
Lunar Staff: In Chapter 1, there is a statue in a shrine holding that weapon after the halfway point.
Tonfa: In Chapter 7, this weapon can be taken from a dead ninja in the storage room that you drop into.
Vigoorian Flail - Chapter 9 after you fight the worms in the pool, as you run up the pathway there is a dead ninja there. search him and you will find it.
Ok when your in the 2nd chapter when you get dropped off at the Statue of Liberty museum when you go in there gonna show you items in the glass shield window. Hit the window with the two swords showing and then you will obtain it also at the wall with a head hit the wall a couple of times and you will get something.
Camoflauge outfit - beat the game on warrior setting.
Red ninja outfit - beat the game on Acolyte setting.
In the part when you are dropped off at the statue of liberty your going to walk into a room with lots of museum relics(this is the part where you get the twin dragon swords) theres a bamboo curtain there strike it until it breaks. behind it theres a silver X. when you click on it it completely heals you and makes a sound like the 360 does when you turn it on.