Collect emblems
unlock him by shagging the boss
Actually, you can't...... You just.... can't... If you want to play Sonic Adventure 2 Battle, you'll have to buy the game Sonic Adventure 2 Battle (Not trying to sound stupid by the way.)
There are no minigames for the GBA that you can unlock in Sonic Adventure 2 Battle. You can unlock the boss battles and racing minigames, but they are played on the GC like the rest of the game.
after beating the game 1000times
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.
To unlock the jewel race you have to complete all of the beginner races.
There is no Sonic Adventure 4 Battle, there is Sonic Adventure 2 Battle but that was released 8 years ago.
She is not in kart racing.
No as Sonic Advance 2 came out after Sonic Adventure 2 Battle and Sonic Adventure 2 Battle was only made to be compatible with Sonic Advance.
Amy is already unlocked, just choose to play as her
There is no such thing as Sonic Adventure Battle 1, nonetheless no Sonic Adventure is playable on Sonic Mega Collection.
Sonic adventure battle 2