Um u cant shadow is not in sonic advanced 2
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amy is already unlocked in sonic advance. in sonic advance 2 beat the game with every character with all 7 chaos emeralds to unlock her. in sonic advance 3 beat toy kingdom with sonic as leader ro unlock her.
unlock him by shagging the boss
In Sonic Adventure 2 Battle(she is very hard 2 unlock get all rank A's with sonic!)Sonic Adventure DX,Sonic Advance 1 2 and 3(in 1 of them you have 2 unlock her).Sonic Riders.
1.Unlock Super Sonic by beting 50 man Melee with any chcacacter. 2.Unlock Super Shadow by beting 100 man Melee with any chcacacter.
Unlocked by completingSunset Hill (Zone 2), Act 3 with Sonic as team leader.