Complete all chao races and chao karate.
Complete all challenges on every single level.
Complete all racing challenges with all characters.
Complete the Dark Story and the Light Story and "End".
There might be more but i dont know them...
Chat with our AI personalities
Emblems are awards you get for completing a level,defeating a boss, choa race,ect. There are 180 in the game and are the main goal for the game
I heard a rumor that you have to acquire all 180 Emblems to earn the special stage. I myself am not attempting that kind of feat.
Emblems in Sonic Adventure 2 allow more content to be bought from the Black Market in Chao World, including character menu themes. Collecting all 180 will unlock a 3D version of Green Hill Zone.
You cant but you can get super sonic by getting all 180 red rings
To unlock Super Sonic, you must do two things.. First you must collect all 180 Red Rings from each of the 36 main acts, this will unlock all of the 2nd and 3rd Sonic Simulator acts. Then you must clear all 21 of these Sonic Simulator stages at least once, you may do this as a single player. Once you've done that, the options satellite on the main screen will glow, and give the option to use Super Sonic. In Super Sonic mode, you collect 50 gold rings and activate the ability like wisp abilities. Special wisp abilities will be disabled, and the stage design will change depending on this. Super Sonic cannot be used in challenge mode.