Get More Planes:
Beat any 2 levels without returning to the air base in a row to get more planes
Double Money:
Destroy any airborn targets with your GUNS instead of missiles and you will get double the money bonus at the end.
Get More Planes:
Beat any 2 levels without returning to the air base in a row to get more planes
Double Money:
Destroy any airborn targets with your GUNS instead of missiles and you will get double the money bonus at the end.