One thing I enjoy about bloodborne is the psychological aspect. If you want to survive the hunt, you need particular outlooks and philosophies to act as psychic insulation against the pervasive madness. The madness isn't arbitrary, it's a tightrope.
You have to enjoy hunting enough that you will not hesitate, but you can't enjoy it too much, or you go blood-drunk. You need to be curious, but sober enough to know when to look away, lest you get brain worms. You need to treat it like a job to the point where you can compartmentalize, but not enough that you're easily manipulated by greed. You have to embody humanity through dress and action, but not so much that you become an arrogant zealot obsessed with purity.
Im not really going anywhere with this, that's just such an interesting way to define your protagonist. Especially for a story so obsessed with gothic excess and uberviolence.