The clear_sky_faction_mod_2.2.rar file you have requested: Shadow of Chernobyl / Mods / Singleplayer / Clear Sky Faction Mod - 25.96mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R. Shadow of Chernobyl and upload any files you want to share or are missing. This is the only information we could locate:
This mods changes the Ecologist faction found in Yantar to the "Clear Sky" Faction. They will even be attack by the mercs at random occasions. Check out the readme for full details.