Select the units. Then, click the woman's head on the left followed the woman's head on the right at the command menu bar at the bottom right of the screen. Click the eagle between the two women. If you entered the code correctly, the word "OK" will be spoken. Click the left eagle at the top bar with the date and time to enable God mode. Clock the right eagle to advance to the next level. Select the "Armalite" on the command menu bar to reload your ammunition.
Camouflage the scout before exploring enemy areas. That unit will be almost invisible.
Team a scout with a sniper. The scout can see farther, providing more targets for the range of the sniper's rifle.
The engineer is the only unit that can construct buildings and should be used to build a defensive perimeter.
Place units in a civilian or military building. Depending on the number of units in a building, their visual range and firepower can be increased.
Do not throw grenades upwards on a hill. They can roll back towards your units.
Complete the additional goals within a mission to find extra supplies and reinforcements.