The full version of Halo 5: Guardians was never officially released for PC. Because of this, a functional repack of the complete game (including the campaign) does not exist, and any links claiming to be a "full piece" repack by R.G. Mechanics or others for PC are likely fake or malicious. Current Status of Halo 5 on PC
Torrents are a popular method of sharing large files, including games, over the internet. Users can download the Halo 5 repackaged game via torrents, which involves downloading a small file that contains information about the game files, and then connecting to other users who have the game files to download them. Halo 5 Pc Game -repack By R G Mechanics- Torrents
If you want a full Halo experience designed for PC, you should look at: The full version of Halo 5: Guardians was
: A limited version available on the Microsoft Store that includes the map-building "Forge" mode and custom multiplayer games, but and no public matchmaking. Current Status of Halo 5 on PC Torrents