This page contains Sonic Adventure 2 Unlockables for Playstation 3 called "How unlock All Boss Attack Mode" and has been posted or updated on Oct 24, 2012 by michigan. Let us know what you think of this Unlockable by thumbs voting.
How unlock All Boss Attack Mode
After you complete the Hero, Dark and Last Story this All Boss Attack Mode will be unlocked at your 1-Player menu. At this "All Boss Attack Mode" you can play in one run against all Hero, Dark and Last story bosses.
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