Beyond.two.souls-codex.part4.rar -

Right-click the ISO and select Mount . This treats the file like a virtual disc in a drive.

This file ( part4.rar ) is one segment of a larger split archive. Beyond.Two.Souls-CODEX.part4.rar

Select or "Extract to Beyond.Two.Souls-CODEX/" using a tool like WinRAR or 7-Zip . Right-click the ISO and select Mount

If WinRAR says part4.rar is corrupt, you must redownload that specific part. Beyond.Two.Souls-CODEX.part4.rar

Most CODEX releases require a manual crack application unless the installer has a "Copy contents of CODEX directory to installdir" checkbox. Look for a folder named inside the mounted ISO. Copy all files inside that folder.