Finish first three levels of chapter one with any tank.
Finish first three levels of chapter one with all tanks.
Finish first three levels of chapter four with all tanks.
Finish bonus level of chapter four.
Finish first three levels of chapter five with any tank.
Finish first three levels of chapter five with all tanks.
Finish bonus level of chapter five.
Finish all bonus levels.
Finish bonus level of chapter one.
Finish first three levels of chapter two with any tank.
Finish first three levels of chapter two with all tanks.
Finish bonus level of chapter two.
Finish first three levels of chapter three with any tank.
Finish first three levels of chapter three with all tanks.
Finish bonus level of chapter three.
Finish first three levels of chapter four with any tank.
