My friend Skotty got this all working, but I decided to upload here so that all you guys can get to it more easily.
Has a ton of textures and the skyboxes as well.
You stick the “hl2_leak” folder straight into your materials folder
Download
http://static.glitchvid.com/uw/mirror/hl2_leak.7z
Skyboxes
https://dl.dropboxusercontent.com/u/58989379/hl2_leak2.7z
http://static.glitchvid.com/uw/mirror/hl2_leak2.7z
Pics
Download
http://static.glitchvid.com/uw/mirror/hl2_leak.7z
Skyboxes
https://dl.dropboxusercontent.com/u/58989379/hl2_leak2.7z
http://static.glitchvid.com/uw/mirror/hl2_leak2.7z