Talking about Issues, when exiting the Trainstation and turning to the left- for some Reason all of this gets rendered, even though the Tree infront of the Entrance to the "Second Part" of the City blocks the view off. These kind of Problems are dotted all around the Map.
I ain't no mapper- but I doubt this is good for performance.
True, Fallout songs work nicely in the HL2 Universe, makes it seem so distant, dystopian and forgotten. Especially, since it's the part of Town that the Combine want people to forget about. (Atleast what I believe.)