Thank you and you’re welcome.
In a few ways it could be said that Thin-Bloods straddle a fine line between mortality and undeath. Being removed from Caine by 14, 15, or 16 generations, their Cainite vitae is considerably diluted. That said, they are still fundamentally vampires. Due to the inherent weakness of ¹ Duskborn blood; they are considered clanless and therefore never suffer any specific clan bane or compulsion, cannot create Blood Bonds, perform the Embrace successfully with any absolute degree of certainty, rarely frenzy, ² shows some semblance of life, sunlight is less lethal, and sustains damage like a mortal but mends like a vampire.
They have no intrinsic Disciplines, unlike all other Kindred who have three or more. In game terms, when a Thin-Blood feeds they gain one dot in a Discipline associated with the Resonance of the blood consumed, together with one level one power in that discipline. If the Resonance is intense or stronger, they can gain an additional dot together with a second power. No additional powers can be gained in this way nor can the rating increase with experience. This Discipline lasts until Hunger reaches 5 or the next feeding. In short, they gain temporary Disciplines depending on the Resonance of the blood they consume. Therefore, this Discipline is essentially circumstantial. However, due to how thin their blood is, it is surprisingly highly mutable. Some, but not all, Duskborn can learn Thin-Blood Alchemy to create formulae; counterfeiting normal Disciplines or even creating entirely whole new effects.
A Thin-Blood who manages to commit Diablerie on a “true” Kindred absorbs not only their power and spirit but also their lineage, turning them into a 13th generation Kindred of their victim’s clan. The Camarilla occasionally dangles this prize in front of Duskborn who show themselves capable of running the dirtiest of errands and surviving, offering up a Cainite sentenced to a Blood Hunt as sacrifice. By lowering generation they are much closer to Caine, thus “thickening” the blood. This carries the boons and banes of whichever clan their victim belonged too. Meaning the blood is less mutable than it once was.
For example: Memorie was embraced by a 13th gen. Malkavian, thus becoming a 14th gen. Thin-Blood. Over the course of the chronicle a particular Ventrue neonate, Harlan, has been a bloody pain in her ass. Thanks to some social maneuvering and hard work she has become indispensable to Mortimer Morgenstern, the Nosferatu Prince of Sheboygan, Wisconsin. She has been relatively unseen by members of the Camarilla except the Prince and his proxy, a ghoul. Even Harlan has no clue who she is, he just knew the Prince was up to some clandestine shenanigans. As a reward, Mort offers her said Ventrue for Diablerie. Harlan is not only a nuisance, he was sired by a despised political rival. Once Diablerized, Memorie becomes a 13th generation Ventrue and losses the ability to mutate her blood with alchemy. Mr. Morgenstern not only gained an ally, but an ally that now has a dirty little secret. An ally, who in the near future can potentially begin to spy on the political machinations of the city’s Ventrue after she formally presents herself to the clan Primogen. Internally gloating, about how he dicked-over his rival, Mort allows himself to crack a sly grin. It is good to be the
¹ Nickname for Thin-Bloods
² Blush of Life
I believe there are amalgam powers, Blood Sorcery, or combo disciplines that allow one to temporarily hide Diablerie veins in your aura. These black veins will persist for a year, or if the diablerist’s generation was lower than their prey’s, they persist for a number of years equal to the original difference in generation.
Allowed under certain circumstances, though it is generally frowned upon.
I think it could be handled similarly to how it was in Vampyr. Draining a human completely dry allows the swift gain of vampiric power, but at the cost of your humanity. A zero kill run would be noticeably harder, because you are weaker. You would need to play more intelligently and be very cautious. There might be some achievements, unlockables, and a good ending for completing the game with zero kills.