its not all that hard.. just play some.. the two secrets in the garden are for aquiring the rank "God", you have to have 1k+ points though so they wont help all that much if you find out by opening the map.. anyways.. the "green cheese" is the item required for getting the planet buster (simply insert it into a scouttower), after the scouttower dies it will spawn a battery, which you put into the robot in the battleship and it will give you the "God's arm" , then mine in the garden until you get two acorns, they will automatically combine into a god's leg and together they change ur rank... sry for the long explanation

also.. does anyone know what "raw alien meat" is for??