If prompted for a password, check the source site (Apun Ka Games) as they typically use their site name as the unlock code.
If Part 7 gives you an error during extraction, it may be a "corrupt archive." Try redownloading just that specific part. download-prototype-apun-kagames-part7-rar
Drop a comment below and I'll help you troubleshoot! If prompted for a password, check the source
Ensure Part 1 through Part 7 are all downloaded and sitting in the same directory. If prompted for a password