There is no breeding garden. Purchase 2 heart fruits from the black market and give one to one chao and one to another.
You have to unlock the Chao Garden by collecting the Chao Key in a stage. After you unlock the Chao Garden, there will be two Chao eggs in the garden.
Raise a hero or dark chao to unlock the hero or dark garden.
You've gotta unlock both Hero and Dark Gardens.
Its already available. To get each mode play through adventure mode and make sure you also set up your chao garden.
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.
Collect emblems
after beating the game 1000times
To unlock the jewel race you have to complete all of the beginner races.
unlock him by shagging the boss
She is not in kart racing.
Amy is already unlocked, just choose to play as her
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.)