1) From where you start walk along the right side of the path up on the hill. When you get to the first guard tower run to where you get the hut key. Run directly there. Don't follow the paths, just run.
2) When you get to this house. Open the door and shoot the guy standing there. Make sure you get the key and then run to the hut that the key opens.
3) Open the door and walk up to the desk. On it is the key to the safe. If you have time run across the street and get the gernade launcher (It will save you time in the long run). Now run straight past the satellite tower and go into the fenced off area with the two houses.
4) Go in the house on your left and open the safe and get the blueprints. Then head for the satellite tower.
5) Go in the tower. Follow the stairs up as far as they go. You should be facing a door. Open it, run in, and blow the computers away. Then run over to the ventelation shaft.
6) If you got the gernade launcher just shoot one shot onto the top of the ventelation shaft entrance. Once the explosion stops climb the ladder and walk into the vent.