Upon reaching the castle, Serana’s father, , offers you a choice:

Looking to dive into the war between the Volkihar vampires and the Dawnguard but need a clean, localized version? I’ve put together a compressed archive for easy installation. Inside the archive:

is a compressed archive typically used to distribute the Russian localization files for The Elder Scrolls V: Skyrim’s first major expansion, Dawnguard . The ".7z" extension indicates it was created using 7-Zip, a popular tool for high-compression archiving often favored by the modding community for sharing game assets like translations, voice-overs, and patches. Overview of Dawnguard DLC

The file typically refers to a Russian language localization or a compressed archive of the Dawnguard DLC for The Elder Scrolls V: Skyrim .