(Fate) Kotomine Kirei Warpriest build?

[Osrio]

Hi, I'm extremely new to Pathfinder. Like straight up unaware of how the Pathfinder system works as a whole due to my lack of experience with tabletop RPGs outside of one DND session. I wanted to try to recreate Kotomine Kirei's playstyle from Fate/Stay Night. If you haven't read or watched it, the gist is that Kirei is a (very shady) psuedo-priest who fights primarily with long, thin knives known as "Black Keys" and focuses very heavily on hand to hand martial arts. He's also typically known as a "Spiritual Healer", able to heal the "soul" rather than the flesh. For argument's sake, let's just say it's a heal.

From what I've gathered, Kirei's best chance for adaptation is via the Warpriest tree, specifically via "Sacred Fist". But from what I can gather, Sacred Fist is not in WOTR at all. Is there a good, reliable build that can replicate Kirei?

[provokastoras]

hm maybe seperatist cleric to hellknight signifier,
(cause rin kept calling him the fake priest seperetists are essentially heretic and hellknight signifier will cover up for his combat prowess you probably want to pick martial adept story to get the unarmed combat feat and maybe focus on throwing things thow unfortunately you can't throw knives in this game you have to wield them

[Osrio]

Is Separatist a Archetype? Because I don't see it unless it's locked behind DLC.

[Schlumpsha]

Separatist is part of the Lord of Nothing. You won't have access to it unless you own the DLC.