Unlock the the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK Boss On Parade mode: - Complete the game to unlock Boss On Parade mode. All levels: - Complete Boss On Parade mode to unlock all levels. God mode: - Complete level 10 on Hard difficulty to unlock the God difficulty setting. Sound test: - To unlock the sound test menu, get a high score in Normal, 2-Minute, and 5-Minute modes with all three ships.