Ensure you have Hubris.part1.rar , Hubris.part2.rar , and any subsequent parts in a single directory.
In online riddle communities, files with extension-like names are sometimes used as "keys." If this is from a puzzle, "Hubris" may be a hint to the password (referencing Greek mythology or excessive pride). Extraction Guide
When a file is too large for certain hosting platforms (like Discord or older forums), it is split into multiple parts ( part1.rar , part2.rar , etc.).