- Achievements
Do the following things to obtain the corresponding Gamerscore points:

20 Points
Ultimate Life Form	Resurrect the ultimate power from the lost memory.
One To Reach The End	End the last hidden story.
Psychic Soldier	Acquire all the power to save the future world.
Blue Phantom	Super Sonic Acquire the all moves.
30 Points
Shadow Episode - Cleared	Clear Shadow Episode.
Sonic Episode - Cleared	Clear Sonic Episode.
Silver Episode - Cleared	Clear Silver Episode.
40 Points
Sonic Episode - Finishd	Clear unlocked Sonic difficult level mission.
Silver The Liberator	Solve all the mystery in Soleanna.
Silver Episode - Finishd	Clear unlocked Silver difficult level mission.
Soleanna's Hero	Solve all Soleannans' problems.
Elite Agent	Finish all the tasks given as agent.
Shadow Episode - Finishd	Clear unlocked Shadow difficult level mission.
50 Points
Soleanna's blue wind	Solve all the problems swiftly.
Gold Medalist
Silver Medalist	Acquire all the Silver Medals scattered around Soleanna...
Dark Hero	Meet all the requests with magnificent skill.
Silver The Savior	Reveal all the secrets with your ultimate power.
60 Points
Shadow Episode - Mastered	Clear all unlocked Shadow ACT Missions with Rank S.
Silver Episode - Mastered	Clear all unlocked Silver ACT Missions with Rank S.
Nights of Kronos	Unlock the complete ending to the last hidden story.
Sonic Episode - Mastered	Clear all unlocked Sonic ACT Missions with Rank S.
100 Points
Legend of Soleanna	Overcome all trials and accomplish a great feat.

- Audio Room music
Successfully complete the indicated episode with a 100% rank to unlock the corresponding theme in the Audio Room:

Shadow's Theme (All Hail Shadow)	Shadow's Episode
Elise's Theme	The Last Episode
Silver's Theme (Dreams of An Absolution)	Silver's Episode
Sonic's Theme (His World)	Sonic's Episode

- Overcomeing Silver
When you fight Silver with Sonic, first do a slide move into him as he is falling from the sky. Then, collect a ring and run around until you hear 'How bout this?', then do a homing attack on him. Run away again until you hear 'How bout this?' again. then do a homing attack again. Repeat this until he is defeated.

- Play as Silver The Hedgehog
Successfully complete the Silver The Hedgehog Boss battle with Sonic to unlock Silver's episode.

- Overcomeing big enemies faster
When facing an enemy that requires more than one hit, use your Homing Attack on it then use your Bounce Attack. Notice: You must first have the Bounce Bracelet.

- Last episode
Successfully complete Sonic, Shadow, and Silver's episode to unlock the Last episode.

- Free mode characters
Successfully complete the indicated task to unlock the corresponding character in Free mode:

Knuckles the Echidna	Successfully complete all Town Stage missions with an 'S' rank.
Amy Rose	Successfully complete all Soleana mystery missions with an 'S' rank.
E-123 Omega	Successfully complete all GUN Commander missions with an 'S' rank.
Miles 'Tails' Prower	Successfully complete all Town Stage missions.
Blaze the Cat	Successfully complete all Soleana mystery missions.
Rouge the Bat	Successfully complete all GUN Commander missions.

- Infinite jump
There is a glitch in the purple gem you can purchase at the market. The purple gem allows you to 'change size' in the description, shrinking you down to fit in small areas. However, when using the gem for Sonic you can jump an unlimited amount of times. When you press Jump while keep pusheding Activate Gem and repeatedly tap A, your character will act as if he wants to do the homing attack. However, the game will glitch, cancel it out, and allow you to jump as many times as desired while moving in the direction you wish to go. This allows you to get to interesting parts of Soleena or an action stage that you were not meant to access. If you die or find a alternate way to lose the gem, it may be 'out of stock' for some time.

- Free mode
Get an 'S' rank on all of Sonic, Shadow, and Silver's levels, Bosses, and town missions to unlock Free mode.

- Go outside boundaries when fighting Silver
Play as Sonic in Story or Trial mode. Select the Silver Boss battle and get as many rings as possible (fifteen). Then, go to the alley in the corner. Try to get as far into the corner as possible. When Silver uses his levitation technique, try to get back in the corner. Silver will try to use the levitation technique again. The rings will be behind you. When you hit the wall, try to collect your rings. You should then go outside the level's boundary. You will be able to walk on invisible bridges and hit other invisible things. Silver might also get out of the level boundary and throw you out of Soleona and you will keep flying forever.

- Longer jumps with Silver
Jump with Silver by pressing A, then push A again while in mid-air. This makes Silver float around. When floating in mid-air, tap A while moving in any direction instead of keep pusheding the button down to make Silver jump further.

- Get Blaze in barrel
Select Sliver from the episode selection menu. Notice: This works better if you have completed Sliver's episode. Walk to the part of the pier from where as Tails or Sonic you travel to Wave Ocean. Next to the building should be a barrel with no cover. If desired, go inside. This makes it easier to get Blaze in. After a few attempts of spinning in circles, Blaze should come in. If you are near the edge of the barrel, use Psychokinesis and you should see Silver's head pop out of the barrel. If you have a lot of patience, you can get Blaze to be in the barrel and Sliver on top after fooling around with it.

- Sideways jump
Select Sonic from the episode selection menu. Notice: This works better if you have completed Sonic's episode. Go to the building that is part of the Desert Stage (not the place where the Transportation Mirror is located). On the opposite side of the mirror, there should be a wall. Use the 'Sliding' technique to get under the wall. While Sonic is landing on the roof, Sonic should do a sideways spin instead of a normal one. Notice: This may not work every time.

- Play as Shadow The Hedgehog
Successfully complete Crisis City with Sonic to unlock Shadow's episode.

- Mini Sonic
Select Multiplayer mode and choose Battle mode. Select Sonic and Silver and go to any level. Get to the first checkpoint and have Sonic fall and appear at the checkpoint; however, do not move him. Then, make Silver fall and appear at the checkpoint. Just when Silver appears, freeze Sonic (RT). When he is frozen he appears very small.

- Completion bonuses
Get a 100% completion for Sonic, Shadow, or Silver's episode to unlock the Audio and Theater room under the Extras menu.

- Overcomeing Solaris
First, use Silver to weaken him until his first arm guard falls off. Then, switch to Shadow and hit him with the beams until his second arm guard falls off. Next, use Sonic to defeat the rest of his first form. Finally, use all three to survive the blows of lasers, and continuously attack.

- Very fast Sonic
In Multiplayer mode in any level or match, equip the Red Gem on Sonic, activate it and keep pushed it, then die. While still keep pusheding the activation button, wait until you respawn. When you respawn, deactivate the gem. You will now run much faster than normal and the time will automatically be slow.