Use the following tactic in the Evac level where you must drive a truck. Go to this grid code to join the Guerillas Fia EA64. On the map there will be a code 113. Drive your truck there. An intermission sequence will appear, then the level will end. You will be a hostage for the Soviets. Stay in the tent on the next level until the Russian that is guarding you dies. After that, go outside and one of the guerrillas will talk to you.
When you start from the forest and all of your team are killed, grab the LAW launcher from the dead soldier. After that, go back to the forest and run to the hills, trying to survive the Russian attacks. Destroy the Russian tanks with your LAW launcher and kill the soldiers with your M16. You can get more ammunition from dead Russian soldiers; grab the AK74 and magazines. Find the road and the car near the pines and dead civilian. Go to the new evac point in the rear of the forest. All in the evac point are killed by a Russian assault, however the resistance will attack soon and you will have to fight with them a short time.