: Right-click on "WLDLNDSNEW.part01.rar" (the first part) and select "Extract Here" or "Extract to...".
: If you are missing any part in the sequence, the extraction will fail with an error like "Unexpected end of archive" or "Next volume is required".
: If part 13 is corrupt, you may need to re-download just that specific file or use PAR2 recovery files if they were provided with your download.