Ensure you have installed DirectX and the latest Visual C++ Redistributables .
Right-click on CCC.REPACK-KaOs.part1.rar and select "Extract Here" using WinRAR or 7-Zip . It will automatically pull data from Part 3. CCC.REPACK-KaOs.part3.rar
It is recommended to temporarily disable your antivirus or Windows Defender, as repacks use "Cracked" files that are often flagged as false positives. Ensure you have installed DirectX and the latest