Alarm clock...
	Arcade mode...
	Challenge mode...
	Mission mode...
	Relax mode...
	Versus mode...
	Weapons...

Successfully complete Mission mode.

Successfully complete the tutorial.

Successfully complete the Egypt world in Arcade mode.

Successfully complete Arcade mode.

Connect all the dots on the bonus levels.

Successfully complete the tutorial.

Successfully complete the indicated world in Arcade mode to unlock the corresponding weapon.

Whirlwind: World 2
Homing shot: World 3
Shield: World 4
Fireballs: World 5
Weapon steal: World 6
Repulse shield: World 7
Stop time: World 8