You'll end up in a large circular area with some airplanes and whatnot, and the final Sentinel gun. When you see a road going the other way to your left, take that road up a bit, and grab the Armor there. When that happens, pound the SUV in front of you with missiles and drive into the tunnel. You have to wait until the bridge is fully extended to move on. A gate isn't opening - a bridge is extending. Take out the second Sentinel here, and keep on driving, killing everything in your path! When the sign for the third access code upload comes, do it and drive slowly. Kill any resistance other than that, and when you come to the second gate, go on through it again.

Go through the first gate, and missile/machine gun the hell out of the first Sentinel we come across. Remember, you can't go any farther until you've gotten those codes, so if you skipped that part, go back and get the codes, then come here. When you get to the first gate, upload the computer codes we got from the computers on the helipad. For enemies on bridges and whatnot, use the truck's machine gun. When you reach the fork in the road, go right. Objective: Disable island defense Sentinels Take the lefthand path and grab some more missiles for your truck, then smash through the gate and we're off. Once that's downloaded, go down off of the helipad. Before going up it, veer to your left and grab the Armor there, then go up the helipad, and download the codes off of the computer grid. If you drive around slowly and carefully here, not toggling weapons or whatever, you can get through here without drawing any attention to yourself. The guard at the gate will think you're a legitimate part of Drake's organization and let you in. Go to your right, and drive to the gate, but do it slowly.

Eventually, you'll come to a fork in the road. As the mission begins, James steals one of the scouting patrol's SUVs. We must destroy the defense on the island and get some codes from within the compound. Objective: Download defense system code from compound Our objective here is twofold. 'Destroy the air defense system that protects the island from attack.'

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