If the extraction stops and asks for "Volume X," you are missing that specific part in your folder.
If you get an error during extraction, one of the parts is likely corrupted. You will need to identify which part failed and re-download it. Devil.May.Cry.HD.Collection.part1.rar
You cannot extract the game using only "part1." You must have all sequential parts (part2, part3, etc.) downloaded and stored in the same folder . If the extraction stops and asks for "Volume