Sonic Adventure 2 achievements

Sonic Adventure 2

4.2 from 935 votes

There are 15 Sonic Adventure 2 achievements (12 without DLC) worth 1,358 (500)

16,036 tracked gamers have this game, 596 have completed it (3.72%)

Achievement Details

Boss Attack in Sonic Adventure 2

Boss Attack49 (20)

Clear all 3 modes in Boss Attack Mode.

  • Unlocked by 2,719 tracked gamers (17% - TA Ratio = 2.42) 16,145  

Achievement Guide for Boss Attack

Grn Lantern1
422,974 (215,982)
Grn Lantern1
Achievement won on 10 Oct 12
TA Score for this game: 608
Posted on 10 October 12 at 09:56
This solution has 4 positive votes and 1 negative vote. Please log in to vote.
Like the other solutions say, you have to beat all 3 stories to unlock boss battle mode, which you select from the main menu under "Boss." It is fairly easy, hero side you fight all the bosses in the hero mode, dark all the bosses in dark mode, and all, all bosses from both sides including Biolizard and Final Hazard. The amount of lives you have is the same as the amount you have in the story mode, so to make this easier, keep replaying Tail's "Route 101" level. By collecting coins, you can rack a very large number of lives quickly, and those lives will translate over to boss mode. You shouldn't need more than 20 but I'd get 30 or maybe 40 if you're feeling unlucky.
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