Because it is a "repack," the installation can take a long time and requires heavy CPU and RAM usage to decompress the files.
If you are looking for the story and gameplay context, here is the "write-up" on the game itself: London, 1918, during the Spanish Flu pandemic. vampyr-repack-full-version-kuyhaa
A mix of melee weapons, firearms, and supernatural vampire abilities (blood spears, teleportation, etc.). 3. Risks and Warnings Because it is a "repack," the installation can
You won't receive automatic updates, and you cannot access online features (though Vampyr is primarily single-player). 4. Better Alternatives Because it is a "repack
This means the original game files have been heavily compressed to make the download size smaller (often reducing it by 30-50%). Once you run the installer, the files decompress back to their original size.