Firearms: Source is a HalfLife 2/Orange Box mod which installs and runs well in
COG-8.1.4/linux. You will need a pre-existing HalfLife 2 installation to use this
mod -- I tested this mod with Steam using HalfLife 2 as the qualifying dependency.
Installation is straightforward;
download the Firearms: Source installer executable
install the mod into the same bottle you have Steam/HalfLife 2 installed into - the installer seems to get the paths right
*play the game
Gets a silver straight up, but appears to be running at gold level - more
time with gameplay/testing required yet...
Cheers!