boss
One of Brencis's three officers, encountered in Svartrau Cathedral at night. She is optional in the sense that everything is optional here — the same walkthrough shows staying on the scaffolding above her as a real alternative to going down.
As human Coen
No verified strategy is recorded yet.
As a vampire
The fight as shown is a night fight, so Coen has claws, Shadowstep and Plane Shift available. The shape of it is a two-phase resource problem: break the shield by spending stamina pressure, then convert the window before the boiling-blood timer converts you first.
One pre-beta encounter, presented by the developers. No health values, damage numbers or timer duration are public, and the narration notes she was a harder fight in the June build than the August route needed her to be.