Sonic Advance 2 hasn't even been released yet in the West, and Sonic Team is already spilling the beans on the secret unlockable bonuses you can find in the game. Alongside some expected modes such as a Super Sonic final stage, sound test and Tiny Chao Garden, comes a surprise - Amy Rose is in fact a secret playable character!
The pink hammer-swinging heroine is unlocked when the player clears the final zone with seven Chaos Emeralds in hand. Once complete, Amy Rose will appear in the character select screen.
It looks like she still has her Piko Piko Hammer from the first Sonic Advance game, but let's hope Sonic Team has sped her up a little bit in the sequel! Sonic Advance 2 is set for a Spring release in the US and UK.
Source: Sonic Team Website