Installation Instructions - Extract the zipped file and place the Eternal_PCK_Installer.bat file into DOOMEternal's installation directory. (ex. C:\Program Files (x86)\Steam\steamapps\common\DOOMEternal) - Put your modded .pck file(s) into your "Mods" folder. - Run the Eternal_PCK_Installer.bat file. - The EternalModInjector will immediately run after this script so modded sound can be injected with ease. - If your original .pck file(s) get lost, verify file integrity and they should be restored.