Used it to install "Microsoft Visual C++ 2008 Redistributable Package".

The game wouldn't launch for me "OOB" because the Microsoft Visual C++ Redistributable Package wasn't installed correctly. Maybe removing and then reinstalling the game would have worked but I didn't try (it would have required downloading the game files again I am guessing). Instead I installed "protontricks" to install the "vcredist_x86_en.exe" present in the "Redistributable" directory among the game files. Also ran "DXSETUP.exe" from the "DirectX" directory, just in case it was also not installed correctly. Of course, in Windows I could have just double clicked those files. But in linux I had to run "protontricks 10880 shell", then had to "cd" to the "Redistributable" directory and then use the command "wine vcredist_x86_en.exe". By the way, I initially tried installing the Microsoft Visual C++ Redistributable Package directly using "protontricks 10880 vcrun2008" but was getting a sha256 mismatch error on the downloaded file (tried twice).