You play as a mere writer who accidentally unleashed an eldritch horde of darkness, but used its magic to give himself a few mundane superpowers (and a lot of guns). The horror comes from fighting against an adversary who can unleash new types of horrors from an otherwise quiet and dark environment at any time, most of which obsess over destroying any light sources, to the point that they can even speed up time just to make it night.
Example of:
Action Horror
You play as a mere writer who accidentally unleashed an eldritch horde of darkness, but used its magic to give himself a few mundane superpowers (and a lot of guns). The horror comes from fighting against an adversary who can unleash new types of horrors from an otherwise quiet and dark environment at any time, most of which obsess over destroying any light sources, to the point that they can even speed up time just to make it night.
