All you have to do is switch the language to Japanese in the Xbox dashboard settings menu. The Japanese version will then load when you play it. This allows you to experience the Japanese voice-overs.
Complete a combonation of levels to an ending boss to unlock the cutscenes used in that combonation. They appear in library mode, each numbered and named.
Unlockable
How to Unlock
001: Punisment, Thy Name is Ruin
6 Dark missions, Dark final boss
002: Prologue to world conquest
All dark, hero ending
003: The March to a Darker World
Dark, Neutral, Dark, Neutral, Hero, Dark
004: The Ultimate Ego
Dark, Dark, Dark, Dark, Normal, Hero
005: Purification via Ruination
Dark, Dark, Dark, Hero, Dark, Hero
006: Apogee of Darkness
Dark, Dark, Dark, Hero, Dark, Dark
007: True Soldier of Destruction
Dark, Dark, Dark, Hero, Normal, Dark
008: Belive In Yourself
Dark, Dark, Dark, Hero, Normal, Hero boss
009: An Android's Determination
Dark, Dark, Dark, Hero, Hero, Dark
010: For Machine, By Machine...
Dark, Dark, Dark, Hero, Hero, Hero
011: Revenge at last
2 dark, 1 neutral, 2 dark, dark ending
012: Ego’s Awakening
Dark, Dark, Normal, Dark, Dark, Hero
013: Destruction and Scorn
Dark, Dark, Normal, Dark, Normal, Dark
014: The Last Remaining Purpose
Dark, Dark, Normal, Dark, Normal, Hero
015: The Nightmare's insulation
Dark, Dark, Normal, Normal, Dark, Dark
016: The Nightmare's Sublimation
Dark, Neutral, Neutral, Neutral, Dark, Hero
017: The Loner's Choice
2 Dark, 3 Normal, 1 Dark
018: Subjugation in Black
Dark, 5 Normal
019: Replica's Depression
2 Dark, 2 Normal, Hero, Dark
020: Machine, Machine
2 Dark, 2 Normal, 2 Hero,
021: Disciple from the Darkness
2 Dark, Normal, Hero, 2 Dark
022: Beloved Clone
2 Dark, Normal, Hero, Dark, Hero
023: Revenge Upon the Doctor
2 Dark, Normal, Hero, Normal, Dark
024: The Ultimate Replica
2 Dark, Normal, Hero, Normal, Hero
025: Sanction's Demise
Dark, Dark, Normal, Hero, Hero, Dark
026: Along With My Home
Dark, Dark, Normal, Hero, Hero, Hero
027: The Cleansing of Darkness
2 Dark, Hero, 3 Dark
028: Birth of a God
Dark, Dark, Hero, Dark, Dark, Hero
029: The Last Soldier's Grim Fate
2 Dark, Normal, Hero, 2 Dark
030: Isolation and Solitude
2 Dark, Hero, Dark, Normal, Dark
031: Archimedes and the Tortoise
2 Dark, Hero, Dark, Normal, Hero
032: Where Is My Happiness?
2 Dark, Hero, Dark, 2 Hero
033: Seduced by Taste of Blood
2 Dark, Hero, Dark, Hero, Dark
034: A Machine Made for War
2 Dark, Hero, Normal, Dark, Hero
035: Original Definition
2 Dark, Hero, Normal, Normal, Dark
036: Machine Paradise
2 Dark, Hero, 2 Normal, Hero
037: Last Will and Testament
2 Dark, Hero, 2 Normal, Dark
038: Enveloped in Solitude
2 Dark, Hero, 2 Normal, Hero
039: Parricidal Savior
2 Dark, Hero, Normal, Hero, Dark
040: Copy of a Savior
2 Dark, 2 Hero, Dark, Hero
041: Excess of Intellect
2 Dark, 2 Hero, Normal, Dark
042: Crystallization of Intellect
Dark, Dark, Hero, Hero, Normal, Hero
043: The Ultimate Confrontation
Dark, Dark, Hero, Hero, Hero, Dark
044: Miracle of Love
Dark, Neutral, Hero, Hero, Hero, Hero
045: the world's demise
dark, hero, dark, dark, dark, dark ending
046: The Ultimate Power
Dark, Hero, Dark, Dark, Dark, Hero
047: Dyed in Lovely Darkness...
Dark, Hero, Dark, Dark, Hero, Dark
048: Vainglory or Abandonment?
Dark, Hero, Dark, Dark, Neutral, Hero ending
049: Messenger of Ruination
Dark, Hero, Dark, Normal, Dark, Dark
050: Standing at the Summit
Dark, Hero, Dark, Neutral, Dark, Hero
051: Controller From the Capsule
Dark, Hero, Dark, Normal, Normal, Dark
052: Beyond One's Own Power...
Dark, Hero. Dark, Neutral, Neutal, Good.
053: A Clone’s Determination
Dark, Hero, Dark, Neutral, Hero, Dark
054: Machine Utopia
Dark, Hero, Dark, Neutral, Hero, Hero
055: A Toast to the Ruler
Dark, Hero, Dark, Hero, Dark, Dark
056: Answer from the Black Comet
Dark, Hero, Dark, Hero, Dark, Hero
057: Transcendentalism
Dark, Hero, Dark, Hero, Neutral, Dark
058: Imperialism
Dark, Hero, Dark, Hero, Neutral, Hero
059: The Weight of One’s Crimes
Dark, Hero, Dark, Hero, Hero, Dark
060: Imprisonment by the Past
Dark, Hero, Dark, Hero, Hero , Hero
061: The Ultimate World Conquest
Dark, Hero, Neutral, Dark, Dark, Dark
062: Black Angel
Dark, Hero, Neutral, Dark, Dark, Hero
063: Under Darkness’ Control
Dark, Hero, Neutral, Dark, Neutral, Dark
064: To Love One’s Self
Dark, Hero, Neutral, Dark, Neutral, Hero
065: Revenge and Determination
Dark, Hero, Neutral, Dark, Hero, Dark
066: Birth of the Robot Empire
Dark, Hero, Neutral, Dark, Hero, Hero
067: Shadow, the Black Android
Dark, Hero, Neutral, Neutral, Dark, Dark
068: A Solitary Android
Dark, Hero, Neutral, Neutral, Dark, Hero
069: Over the Original
Dark, Hero, Neutral, Neutral, Neutral, Dark
070: Machine Sunshine
Dark, Hero, Neutral, Neutral, Neutral, Hero
071: Life is Guilty
Dark, Hero, Neutral, Neutral, Hero, Dark
072: Fallen Angel of Despair
Dark, Hero, Neutral, Neutral, Hero, Hero
073: An Eternal Rival...
Dark, Hero, Neutral, Hero, Dark, Dark
074: This is Just the Beginning
Dark, Hero, Neutral, Hero, Dark, Hero
075: Crystal of Tragic Knowledge
Dark, Hero, Neutral, Hero, Neutral, Dark
076: Shadow’s Second Death...?
Dark, Hero, Neutral, Hero, Neutral, Hero
077: The Legend of Shadow
Dark, Hero, Neutral, Hero, Hero, Dark
078: Power of Love
Dark, Hero, Neutral, Hero, Hero, Hero
079: Deep Black
Dark, Hero, Hero, Dark, Dark, Dark
080: Walk My Way
Dark, Hero, Hero, Dark, Dark, Hero
081: This is Shadow’s Way of Life
Dark, Hero, Hero, Dark, Neutral, Dark
082: A Monarch’s Style
Dark, Hero, Hero, Dark, Neutral, Hero
083: In the Gap of Sadness
Dark, Hero, Hero, Dark, Hero, Dark
084: To Be Ignorant of the Past
Dark, Hero, Hero, Dark, Hero, Hero
085: At Vengeance’s End
Dark, Hero, Hero, Neutral, Dark, Dark
086: Machine Boys
Dark, Hero, Hero, Neutral, Dark, Hero
087: Reborn Along with Sorrow
Dark, Hero, Hero, Neutral, Neutral, Dark
088: With a Fate of Self-denial
Dark, Hero, Hero, Neutral, Neutral, Hero
089: I Am Shadow
Dark, Hero, Hero, Neutral, Hero, Dark
090: Shining Within Memory
Dark, Hero, Hero, Neutral, Hero, Hero
091: The Rise and Fall of the ARK
Dark, Hero, Hero, Hero, Dark, Dark
092: Requiem for a Fallen Angel
Dark, Hero, Hero, Hero, Neutral, Hero
093: Ultimate Shadow
Dark, Hero, Hero, Hero, Hero, Dark
094: For Love’s Sake
Dark, Hero, Hero, Hero, Hero, Hero
095: A Heart Awoken from Darkness
Neutral, Dark, Dark, Dark, Dark, Dark
096: Destruction From Perfection
Neutral, Dark, Dark, Dark, Dark, Hero
097: Darkness’ Strongest Soldier
Neutral, Dark, Dark, Dark, Neutral, Dark
098: Severing Chains
Neutral, Dark, Dark, Dark, Neutral, Hero
099: Retribution Against Humanity
Neutral, Dark, Dark, Hero, Dark, Dark
100: To Be Known as ‘Ultimate’
Neutral, Dark, Dark, Hero, Dark, Hero
101: Dark Warrior’s Advent
Neutral, Dark, Dark, Hero, Neutral, Dark
102: Ariving at the ego
1 nuetral, 2 dark, 1 hero, 1 nuetral, hero ending
103: Determination of a Fake
Neutral, Dark, Dark, Hero, Hero, Dark
104: Path to the Machine Empire
Neutral, Dark, Dark, Hero, Hero, Hero
105: Demise Wrought by Tragedy
Normal, Dark, Normal, Dark, Dark, Dark boss
106: Turning Sorrow into Strength
Neutral, Dark, Neutral, Dark, Dark, Hero
107: The Liberated Soldier
Neutral, Dark, Neutral, Dark, Neutral, Dark
108: Stupefaction’s End
Neutral, Dark, Neutral, Dark, Neutral, Hero
109: Humanity’s Folly
Neutral, Dark, Neutral, Neutral, Dark, Dark
110: Surpassing All Else
Neutral, Dark, Neutral, Neutral, Dark, Hero
111: Soldier of Grief
Neutral, Dark, Neutral, Neutral, Neutral, Dark
112: Reclaimed Heart
Neutral, Dark, Neutral, Neutral, Neutral, Hero
113: Fighting Spirit of Steel
Normal, Hero, 2 Normal, 2 Dark
114: Machine Soldier Uprising
Neutral, Dark, Neutral, Neutral, Hero, Hero
115: The Devil Born From Betrayal
Neutral, Dark, Neutral, Hero, Dark, Dark
116: Beyond the Truth of Impact
Neutral, Dark, Neutral, Hero, Dark, Hero
117: The Immortal Android
Neutral, Dark, Neutral, Hero, Neutral, Dark
118: The New, Coldhearted Empire
Neutral, Dark, Neutral, Hero, Neutral, Hero
119: Singular Atonement
Neutral, Dark, Neutral, Hero, Hero, Dark
120: Spawn of the Devil
Neutral, Dark, Neutral, Hero, Hero, Hero
121: Black Doom’s Scheme
Neutral, Dark, Hero, Dark, Dark, Dark
122: Subjugating Heaven and Earth
Normal, Dark, Hero, Dark, Dark, Hero boss
123: Road of the Dark Soldier
Neutral, Dark, Hero, Dark, Neutral, Dark
124: Dark Finale
Neutral, Dark, Hero, Dark, Neutral, Hero
125: Realization While On Board
Neutral, Dark, Hero, Dark, Hero, Dark
126: Birth of a Champion
Normal, Dark, Hero, Dark, 2 Hero
127: With the Black Arms
Neutral, Dark, Hero, Neutral, Dark, Dark
128: The Road to Self-Assurance
Normal, Dark, Hero, Normal, Dark, Hero
129: The Pursuit of Dr. Eggman
Neutral, Dark, Hero, Neutral, Neutral, Dark
130: Surpassing His Creator
Neutral, Dark, Hero, Neutral, Neutral, Hero
131: ARK, Colony of Pathos
Neutral, Dark, Hero, Neutral, Hero, Dark
132: Perfection Lost to Darkness
Neutral, Dark, Hero, Neutral, Hero, Hero
133: A New Challenge
Neutral, Dark, Hero, Hero, Dark, Dark
134: The Machine’s Coup d’Etat
Neutral, Dark, Hero, Hero, Dark, Hero
135: A Vow for the Victims
Neutral, Dark, Hero, Hero, Neutral, Dark
136: The Truth of Sadness
Neutral, Dark, Hero, Hero, Neutral, Hero
137: The Destined Sonic Showdown
Neutral, Dark, Hero, Hero, Hero, Dark
138: The Black Hero’s Rebirth
Neutral, Dark, Hero, Hero, Hero, Hero
139: Truth, Thy Name is Vengeance
Neutral, Neutral, Dark, Dark, Dark, Dark
140: Searching for “Ultimate”
Neutral, Neutral, Dark, Dark, Dark, Hero
141: Reborn Hatred for Humanity
Neutral, Neutral, Dark, Dark, Neutral, Dark
142: A Future Taken from the Past
Neutral, Neutral, Dark, Dark, Neutral, Hero
143: The Devils’ Victory Song
Neutral, Neutral, Dark, Neutral, Dark, Dark
144: One to Succeed a God
Neutral, Neutral, Dark, Neutral, Dark, Hero
145: Disappointed in Humanity
Neutral (x2), villain, neutral (x2), villain.
146: Faith Taken From Solitude
2 Normal missions, 1 Dark, 3 Normal, Hero final boss
147: Planted Memories
Neutral, Neutral, Dark, Neutral, Hero, Dark
148: To Unite Humanity
Neutral, Neutral, Dark, Neutral, Hero, Hero
149: Isolated Soldier Shadow
Neutral, Neutral, Dark, Hero, Dark, Dark
150: Answer Derived from Truth
Neutral, Neutral, Dark, Hero, Dark, Hero
151: A Fake’s Disposition
Neutral, Neutral, Dark, Hero, Neutral, Dark
152: A New World without Betrayal
Neutral, Neutral, Dark, Hero, Neutral, Hero
153: Together with Maria...
Neutral, Neutral, Dark, Hero, Hero, Dark
154: The Tragedy’s Conclusion
Neutral, Neutral, Dark, Hero, Hero, Hero
155: The Day That Hope Died
3 Neutral, 3 Dark
156: Dark Destroyer
Neutral, Neutral, Neutral, Dark, Dark, Hero
157: Diabolical Power
Neutral, Neutral, Neutral, Dark, Neutral, Dark
158: For Freedom
Neutral, Neutral, Neutral, Dark, Neutral, Hero
159: At Least, Be Like Shadow...
Neutral, Neutral, Neutral, Dark, Hero, Dark
160: Seeking a Silent Paradise
Neutral, Neutral, Neutral, Dark, Hero, Hero
161: The lion's awakining
4 nuetral, 1 dark, dark ending
162: Identity
Neutral, Neutral, Neutral, Neutral, Dark, Hero
163: An Android's Rebellion
Neutral (5x), then villain
164: A New Empire's Begining
6 Normal missions, Hero final boss
165: Bullets from tears
4 nuetral, 1 hero, dark ending
166: Journey to Nihility
Neutral, neutral, neutral, neutral, hero, hero.
167: Shadow Surpassing Shadow
Neutral, Neutral, Neutral, Hero, Dark, Dark
168: Dr. Eggman’s Miscalculation
Neutral, Neutral, Neutral, Hero, Dark, Hero
169: Along with the ARK
Neutral, Neutral, Neutral, Hero, Neutral, Dark
170: Requiem for the Heavens
Neutral, Neutral, Neutral, Hero, Neutral, Hero
171: Sonic Dethroned
Neutral, Neutral, Neutral, Hero, Hero, Dark
172: Justice Reborn
Neutral, Neutral, Neutral, Hero, Hero, Hero
173: Steel Ruler
Neutral, Neutral, Neutral, Dark, Dark, Dark
174: For Sake of Self
Neutral, Neutral, Neutral, Dark, Dark, Hero
175: Farewell to the past
2 nuetral, 1 hero, 1 dark, 1 nuetral, dark ending
176: Steel Paradise
Neutral, Neutral, Hero, Dark, Neutral, Hero
177: The Guardian with No Past
Neutral, Neutral, Hero, Dark, Hero, Dark
178: The Ultimate Atonement
Neutral, Neutral, Hero, Dark, Hero, Hero
179: A Fake’s Aspiration
Neutral, Neutral, Hero, Neutral, Dark, Dark
180: Machine World
Neutral, Neutral, Hero, Neutral, Dark, Hero
181: Twilight ARK
Neutral, Neutral, Hero, Neutral, Neutral, Dark
182: Compensation for a Miracle
2 Normal missions, 1 Hero, 3 Normal, Hero final boss
183: The Strongest Hedgehog
2 Normal, Hero, Normal, Hero, Dark
184: The Ultimate Punisher
Neutral, Neutral, Hero, Neutral, Hero, Hero
185: Voyage of Reminiscence
2 Normal, 2 Hero, 2 Dark
186: Wandering's End
2 Normal, 2 Hero, Normal, Hero
187: The Ultimate Proof
Neutral, Neutral, Hero, Hero, Hero, Dark
188: Punisher of Love
Neutral, Neutral, Hero, Hero, Hero, Hero
189: Messenger From the Darkness
Normal, Hero, 4 Dark
190: The New Ruler
Normal, Hero, 3 Dark, Hero
191: Dark Soldier
Normal, Hero, 2 Dark, Normal, Dark
192: Road of Light
Neutral, Hero, Dark, Dark, Neutral, Hero
193: The Machine-Laden Kingdom
Normal, Hero, 2 Dark, Hero, Dark
194: New Determination
Neutral, Hero, Dark, Dark, Hero, Hero
195: Birth of the Dark Soldier
Neutral, Hero, Dark, Neutral, Dark, Dark
196: A New Journey
Neutral, Hero, Dark, Neutral, Dark, Hero
197: The Android’s Opposition
Neutral, Hero, Dark, Neutral, Neutral, Dark
198: Founding of the Robot Empire
Neutral, Hero, Dark, Neutral, Neutral, Hero
199: The Eternal Protector
Neutral, Hero, Dark, Neutral, Hero, Dark
200: The Sinner’s Repose
Neutral, Hero, Dark, Neutral, Hero, Hero
201: A Hero's Resolution
Normal, Hero, Dark, Hero. 2 Dark
202: The Weapon’s Empire
Neutral, Hero, Dark, Hero, Dark, Hero
203: Perpetual Voyage
In this order: Neutral, hero, villain, hero, neutral, villain.