Kill both of them and then turn to the left to find a small opening in the building. Here there is an infinite ammo crate for the RPG and a good vantage point for taking down the striders. Use the same structures as cover that were used when entering the building and slowly advance across the area in front of the building.In the center bunker there is some more RPG ammo, grab this, fire off some shots and run across the open area to the overturned dumpster. There is a tunnel that leads to the other side where there is a hill of rubble to be climbed. Dash across the steps to the museum and run down into the glowing pit. The striders are large tripods with deadly spiked legs and mounted gun turrets. This next section is more about running for cover than fighting. Once inside the next building, run down the stairwell and greet the resistance fighter at the bottom with the RPG. More allies will join the party, so use them to your advantage. The throw some grenades into the adjoining building to clear out the huge crowd of troops waiting inside. Head over to the supply crates and push the red button to connect the bridge to the building on the other side.Fire an SMG shell across the bridge to clear the way.

To the left of this, run up the steps and guide a rocket to the gun turret on the next roof. Around the dome of the building there is an energy and health station. Take this down, then restock rockets and use them against the elites that round the corner.

Keep an eye on the infinite rocket crate because a gunship will soon appear over the horizon. Run up to the roof where there are two soldiers waiting and many more around the corner.

Half life 2 too many crates