Mord3rca's neat gamma-launcher tool makes it possible to install STALKER GAMMA natively on Linux bypassing GAMMA's installer which needs Windows to run.
This doc is a short summary of 2 other documents but aimed at using Steam instead of Lutris to run the game.
- gamma-launcher covers the installation of gamma-launcher. If you're on Arch or a variant of it, consider using
yay -Sy gamma-launcher
to let Arch manage the install and keep it updated for you. - A guide to getting S.T.A.L.K.E.R. - G.A.M.M.A. running on GNU/Linux by DravenusRex is a good guide to getting it running with Lutris. It was the basis for this document.
Read the above for reference if you need, but the below covers the entire process.