Missing Information is a HalfLife 2: Source mod which installs and runs well
in COG-8.1.4/linux. You will need a pre-existing HalfLife 2: Source title
installed to use this mod -- I tested this mod with Steam using HalfLife 2:
Episode 1 as the qualifying dependency. Installation is straightforward;
download the Missing Information installer executable
install the mod into the same bottle you have Steam/HalfLife 2: Source
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!