Alien Swarm Content?

Is it possible to use content from Alien Swarm in CS:S?
I’d like to see it in first person perspective and maybe make a few maps. Just for fun no commercial use of course.
I tried GCFScape but the PAK file didn’t extract anything.

Yes.

You have to open one of the .vpk files inside of common\alien swarm\swarm\ folder with gcfscape then extract to your CS:S folder.

I opened the vpk. files with my GCFScape and it showed no files inside? It’s like they’re protected somehow and I can’t view them. The file size is roughly 200mb per vpk. file so it can’t be empty.

Open up common\alien swarm\swarm\pak01_dir.vpk ?