Before extracting, check the file size. A legitimate hfwcompleteeditionv15800zip should be between (compressed). A full install will be 150 GB+ . If the file is 2GB, delete it immediately.
The "Complete Edition" of the game includes the base title and the Burning Shores expansion file hfwcompleteeditionv15800zip
The "v15800" segment typically refers to a specific build or version number of the software (Version 1.5.80.0). Before extracting, check the file size