Half-Life 2 Walkthrough -> Highway 17
We emerge at the former pier and board the buggy. A crane lifts us, but due to a malfunctioning magnet, we land upside down. We exit the car and, after shooting the nearby maggots, use the gravel gun to get the car back on its wheels.
Along the way, you'll encounter things that poke into the ground to repel maggots, and empty houses you can loot. One of them will contain a telescope-like device through which you can peer at the rebel village, and a couple of combine harvesters.
Rebel Village
We arrive at a village occupied by rebels. One of them says they're expecting a strike from a stormtrooper. We go into the basement, where a certain Colonel Cavige is explaining how a rocket launcher works. We grab the grenade launcher and head upstairs.
Missile supplies can be found in the houses. We shoot down the incoming "bio-stormtrooper." We get in the car and drive through the open gates.
Physicist-Crane Operator
As soon as we climb into the cabin, a group of soldiers will run out of the hangar below. You can grab a container with the magnet and sweep them away, or you can climb out of the cabin and shoot the red barrels nearby. Then we grab the container or simply use the magnet to grab the raised bridge so we can cross to the hangar.
After lowering it, we climb down. We lower the ladder at the foot of the crane. We return to the car and drive it to the crane. We park it on the sand, close to the opposite platform, and climb up the lowered ladder to the crane. We lift the car with a magnet and place it on the platform in front of the hangar:
We descend and cross the previously lowered bridge to the platform next to the car. In the hangar, we open the gate in the wall and continue on to the courtyard with the soldiers, where we jump out the glass onto the road.
Rolling mines encountered along the road are best captured with the gravity gun and thrown into the water. A little before you reach the place where you need to dismount the buggy, on a hillock, behind a rock, lies the corpse of a rebel, and next to him is a crossbow and a set of arrows:
After crossing the bridge, the exit from which is blocked by an energy screen, we get out of the car and head towards the wires. There's an armored car there. We knock out the supports from under its wheels, and it rolls into the water. The wires break, and the screen disappears.
Bridge of Death
When we approach a very large bridge with a train parked on it, search the three-story building nearby. On the second floor, you'll find a crossbow with a telescopic sight. Now we need to cross the bridge. You can reach it by following the road along the cliff.
When a stormtrooper appears, shoot it down and head back to the car. Drive onto the bridge and quickly travel along the tracks alongside the stationary train. As soon as you hear the train's horn, turn around and head back, waiting for the train to pass before continuing on.
You can actually pass this area in front of the train, but then a black screen may appear with a mission failure message.
End of Chapter 7. Sand Traps await us next.