The Uprising — Half-Life 2 Walkthrough

You'll join forces with various resistance groups, including Barney Calhoun, as you push through the city. This chapter features some of the largest firefights in the game. Use cover, coordinate with your allies, and utilize all your weapons. You'll encounter new Combine units, including Striders and Gunships, which require heavy weaponry to defeat. Your objective is to clear a path towards the Citadel, the Combine's central fortress. The chapter ends as you make significant progress into the heart of the city.