DownFall is a Half-Life 2 single-player mod taking place in the White Forest surroundings. You 're once more putting on the HEV suit as Gordon Freeman. Your mission is to recover a newly developed technology by the resistance, known as the "citadel buster", before the Combine manage to destroy it.
Nice, looks like the caves in Episode 2, which is a good thing :E
that's what their going for!