Frist press "Start Game" then press the down button so you choose "Easy". Frist build a Machine Gun like this: (Start from the part where the enemys come from)Go right 5 squares and down 2 squares. Build the machine gun there. Build another one like this: Go 9 squares right and build it there. Keep upgrading the Machine Guns untill both are Level 5. After you do that buy 16 Ice Cannons($3200)(If my calculations are correct). Just keep upgrading them and then buy anything else you want and place them at the end. If you want to definitly win then put 16 Ice Cannons in the last square(Â£3200). Hope that helped you. Any comments or suggestions please post here.