Bloodborne has a first-person mod that goes beyond simply moving the camera.
Modder Garden of Eyes worked with modder Zullie the Witch, who created the Dark Souls 3 first-person mod, to create Bloodborne's first-person mod. Trailer is below:
As you'd expect, Bloodborne's combat looks and feels entirely different in first-person, where you don't have as comprehensive a view of the action afforded by a third-person perspective. The bosses in particular look extra scary up close!