

Continue to be weary of mines in the area they are hidden behind and under objects. Shoot the head crabs waiting on the other side of the fence, then disable the hoppers at the bottom of the hole and jump down. Mines that are fired by the gravity gun will explode. To reset a mine, suck it up with the gravity gun and it will turn blue and then green. Green hoppers have been set by the resistance and can be ignored, even walked on. Red hoppers have been set by the Combine and are dangerous. These weapons will activate when you approach them, then hop towards the target and explode.

The ground has been covered by hopper mines. Move the metal and then peer into the hole. At the end of the alley there is a fenced in area with a hole in the concrete covered by a piece of metal. Use your allies to take them down and head down the alley the troops came from. Two combine soldiers will come through the doorway next to the souvenir shop. They join up with you and can be sent to a location by pointing the reticule in a direction and pressing the C button. More members of the resistance are taking down the view screen in front of the train station. Help a fellow resistance fighter take down two surveillance drones and walk around the corner back to the town square. The stairs are blocked, so take the hallway filled with rubble earlier in the hall. At the bottom of the stairwell, take a right to find a TV with that flashes the G-Man just before it shuts off. At this point, jump over the smashed gate to the left and enter a bombed out building with a fire burning inside.

After crushing the combine, he will rip open a gate, attack a drop ship and be carried off into the air. Troops will attack from the front, and a combine APC will tear in from the side. In the next area, your basic objective is to stay the hell out of your robotic friend's way. Across from the supplies there is a doorway leading to a pit. Here there is an infinite crate of SMG ammo as well as some supply crates that store some health. Then, climb up the ladder to the windows to find some more ammo and head out of the door. Kleiner's shotgun can be searched for ammo and the energy station on the wall should be used. Before leaving the lab, check the desk where the bubbling water tanks once stood for some health. Barney is leading the resistance forces in city 17 and is happy to accept your and dog's help in the battle.
