If you are trying to using "par" files (parity files) to create a "paper" (recovery file), you would need to use a tool like QuickPar to repair the missing parts using the .par2 files [1]. If you can tell me: Are you trying to extract the game files? Do you have all the parts (.part1, .part2, etc.)?
Because this is a (a large file broken into smaller, numbered parts like .part1 , .part2 , etc.), you cannot use it alone. Here is what you need to do: DarkSoulIII.La.Ciudad.Anillada.part1 (3).rar
Right-click only the ...part1 (3).rar file, select "Extract Here" (or "Extract to..."), and the software will automatically combine all parts into the final file [1]. If you are trying to using "par" files
You must have all the files (e.g., ...part1.rar , ...part2.rar , ...part3.rar ) in the same folder [1]. Because this is a (a large file broken
I can provide the specific steps or troubleshooting for extracting the RAR file.
Install a program like WinRAR or 7-Zip .