Completing the Final Zone:
When running up the robot's arm, stop and crouch at the low point between the forearm and the shoulder. This will prevent you from flying off once he waves his arm.

Damage and Rings:
When you get hit by an enemy your will fly every where like all sonic games. However, the more you get hit the higher your rings fly thus making them harder to get. This normallys happens in boss battles, but it also effects in in a zone.

Easier Special Stages - Pause Method:
This is really good for Special Stages. When you"re in a special stage, and you have to navigate around lots of bombs, pause the game, and then place the stylus where you want sonic to go next. When you unpause, he will zip to that location.

Extra Zone:
Successfully complete Sonic's and Blaze's story line with all seven Chaos Emeralds to unlock Extra Zone at the character selection screen, where you play as Super Sonic and Super Blaze.

Play as Blaze:
Defeat the first Boss to unlock Blaze.

Stay in the Air Longer with Blaze:
To stay in flight longer while playing as Blaze the cat, instead of holding R, rapidly tap R. This should significantly increase your time of flight in the air.

Sound Test:
Successfully complete the game to unlock the Sound Test option.

Time Attack mode:
Successfully complete the game to unlock Time Attack mode.