: Use WinRAR or 7-Zip . Right-click on part01 and select "Extract Here"; the software will automatically pull data from part02 and subsequent volumes.
: If the source provided MD5 or SHA-1 hashes, verify them to ensure the file wasn't corrupted during download.
Do you have of the archive, or are you seeing an error message when trying to open this specific one?
Since this specific naming convention is common on file-sharing and torrent sites:
: v1.10.16930a. This specific build number usually corresponds to a post-launch update that includes bug fixes and potentially the "Red Goddess" or "Demonic 70" content updates.
: You must have part01 through to the final part of the sequence. If any part is missing or has a different version number, extraction will fail with a "CRC error" or "Unexpected end of archive."
: .part02.rar indicates this is not a standalone file. You need all parts (part01, part02, part03, etc.) in the same folder to successfully extract the game data.