Undercity Uprising [HL2: Ep2]

The citadel has fallen. The combine advisors have left Earth. The remaining population centers are the only habitable areas of the planet, causing them to become towering slums as world population rebounds. 

Climb upwards and escape the undercity, fighting against the combine remnant.

Some models from L4D2. Air conditioner model made by chanoc for Jabroni Brawl 3 and used with their permission.