I am not responsible for any harm done to your files, you take the risk by downloading it.
WARNING this WILL change "marked one"s face to a cool skimask one, if you do not like it you can uninstal.
1. Unzip to Desktop
2. Drag the files you want (ex. act_stalker_face= Skimask, act_stalker_specnaz1 = KLMK) to your Textures ACT folder ( most likely C:\Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl\gamedata\textures\act )
3. YOU DO NOT NEED TO START ANOTHER GAME ITS A TEXTURE!
4. this took me awhile to make so please give me credit
5. REMEMBER if you dont like it, it's uninstallable