Ashlander on Agent of Weird: Exploring the Write Fantastic

A bit niche, but I think I've discovered a reference to this film! Was playing the Rogue Trader RPG, and there's a bit where you can discover a nobleman who uses a Halo Device: https://warhammer40k.fandom.com/wiki/Halo_Devices The device is described as looking like a metal scarab (which is also shown in the wiki illustration) that burrows into the user's flesh, and like vampires the users are rendered immortal but at the cost of becoming flesh-eating monsters. There's also a Lovecraftian element in the connection to unknown alien worlds, and the nobleman in the game speaks a Cthuhu-esque alien language.