This allows the torrent to "repair" your missing data without downloading the whole game again. Common Troubleshooting
The "God of War" repack on FitGirl’s site usually refers to the (v1.0 to v1.0.12). God of War -- fitgirl-repacks.site --.part43.rar
Ensure part 43 is the same size as parts 1–42. If it is smaller, the upload was likely interrupted. This allows the torrent to "repair" your missing