Do you have (part1, part2, etc.) in the same folder? Which extraction software are you currently using?
: All files must have the exact same prefix. Do not rename part3 to something different than the others, or the software won't recognize it as part of the set. DesertStalker-0.11c-pc.part3.rar
: If the software says "Unexpected end of archive," you are likely missing the final part of the sequence. If you'd like, let me know: Do you have (part1, part2, etc