First use blue chaosemerald
FIRST_USE_BLUE_CHAOSEMERALD88.3%

Achievements and their recorded unlock rates.
Loading your Steam progress…
FIRST_USE_BLUE_CHAOSEMERALDFIRST_TIME_DEFEAT_ZONE01BOSSFIRST_CLEAR_BONUSSTAGEFIRST_USE_RED_CHAOSEMERALDFIRST_TIME_DEFEAT_ZONE02BOSSFIRST_TIME_DEFEAT_ZONE03BOSSFIRST_USE_PURPLE_CHAOSEMERALDFIRST_TIME_DEFEAT_ZONE04BOSSFIRST_TIME_DEFEAT_ZONE05BOSSFIRST_TIME_DEFEAT_ZONE06BOSSFIRST_USE_LIGHTBLUE_CHAOSEMERALDFIRST_CLEAR_MINIACTFIRST_TIME_OBTAINED_200RINGS_IN_STAGECLEARFOUND_AT_ITEMBOX_GOALPLATEFIRST_TIME_DEFEAT_ZONE07BOSSFIRST_TIME_DEFEAT_ZONE08BOSSFIRST_TIME_DEFEAT_ZONE09BOSSFIRST_USE_GREEN_CHAOSEMERALDFIRST_TIME_DEFEAT_ZONE10BOSSFIRST_USE_YELLOW_CHAOSEMERALDFIRST_USE_WHITE_CHAOSEMERALDFIRST_USE_SUPERFIRST_TIME_DEFEAT_ZONE11BOSS_EGGFIRST_CLEAR_COOPERATIVEPLAYCLEARED_OVERFLOWING_FRUITSFIRST_CLEAR_TRIP_STORYMODEFIRST_TIME_DEFEAT_ZONE12TRUEBOSSFIRST_TIME_OBTAINED_TOTAL10000RINGSFIRST_TIME_OBTAINED_ONEPLAY600COINS_IN_MINIACTCLEARED_SHOOTINGGAME_UNSCATHEDDEFEAT_TOTAL1000ENEMYFIRST_TIME_OBTAINED_TOTAL100MEDALS_IN_BONUSSTAGEDEFEAT_TOTAL100ENEMY_IN_DROPDASHDEFEAT_TOTAL100ENEMY_IN_HAMMERATTACKDEFEAT_TOTAL100ENEMY_IN_GLIDERDEFEAT_TOTAL100ENEMY_IN_TWOJUMPSDEFEAT_TOTAL100ENEMY_IN_FLYINGDEFEAT_ALL_BONUSENEMY