Call in. A single player mod which plays out at the same time as Gordon and Alyx flees the citadel in Ep1. You take the role of a rebel soldier on a mission to retrieve information regarding the super portal to aid in the building of Dr. Magnussons rocket.
This is the outdoors nighttime environment I'm currently working on, might be a little dark, I'm still working with the lightning.
Nicely, tho' fog might be a hepfull suggestion :P