Desert Recon
After successfully taking the first three pictures of the ships, continue to the desert. Watch your radio signal when it picks up. You should have the two bars to be all fullly green. When that happens, you can pick up the camp on the radar.
God Mode
Pause the game, and when in the pause menu, press this combination of keys on your keyboard:
Insert, Delete, Insert, Insert, Delete, Insert, Delete.
If you did it correctly, a message saying "God Mode Active/Inactive" should appear.
Increased Attack Power
Pause the game, and when in the pause menu, press this combination of keys on your keyboard:
Insert, Insert, Delete, Insert, Delete.
If you did it correctly, a message saying "Damage Increased" should appear.