ACHIEVEMENT - HOW TO UNLOCK Beyond Good And Evil - Clear LAST part in story mode. Boss Attack - Clear all 3 modes in Boss Attack Mode. Chao Raiser - Raise all 5 properties of any one Chao up to level 10. Chao! - Name your Chao for the first time. DARK! - Clear DARK side in story mode. Emblem Collector - Unlock 90 emblems. Emblem Mania - Unlock all 180 emblems. Heaven or Hell - Raise a HERO Chao and a DARK Chao with your hero and dark characters respectively. Hello World - Clear stage 1 on either side in story mode. HERO! - Clear HERO side in story mode. Karate Master - Beat all your enemies in Super Level in Chao Karate 1P mode. Level 4! - Play all level 4 stages in Action Race, Treasure Hunter and Shooting Battle. Mission Complete - Win all A RANKs (5 A RANKs) in any one stage in story mode. Speedy Racer - Win NO.1 in expert level in kart race. You Are The Legend - Win A RANK in all stages in Story Mode.
Collect all 180 emblems in the game to unlock the secret Green Hill Zone, accessed from the Stage Selection screen (a green island). This level is a recreation of the original Sonic zone from the very first game.