Unlock 'All Boss Attack' Mode - Sonic Adventure 2
Achievements: See the list of achievements for this game. Find or add hints to get them.
Unlock 'All Boss Attack' Mode
This feature will appear as an option in the 1-Player menu when you complete the Hero Story, Dark Story and the Last Story. 'All Boss Attack' is a time attack mode where you face ALL the bosses from the Hero Story, then Dark Story then finally the Last Story in succession with no breaks.
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