The codes should work with the region specified but may work for other regions as well.
Device Compatibility: Action Replay, CodeBreaker & GameShark
Training Complete/Unlock Lvls
800b2aec0100
1st Place Beach
300b2aef0001
1st Place Meadow
300b2aee0001
1st Place Forest
300b2af00001
1st Place Secret Ranch
300b2af10001
Unlock Beach at Night
300b2adf0001
Unlock Meadows at Night
300b2ae00001
Unlock Forest at Night
300b2ae10001
Unlock Mountains at Night
300b2ae20001
Unlock Secret Ranch/All Stars
500004010000
300b2adb0001
Infinite Time
800132f62400