Looking for that grim adventure where the journey feels as terrifying as the monsters? 'Between Two Fires' by Christopher Buehlman absolutely nails this. It’s set during the Black Death, following a disgraced knight escorting a mysterious girl across a plague-ravaged, demon-infested France. The horror is visceral and immediate—these aren't just fantasy beasts, they're twisted, theological nightmares that get under your skin. The quest itself feels genuinely desperate and weary, like every mile costs something.
Another one that blends the epic scale with a deep, creeping dread is R. Scott Bakker's 'The Darkness That Comes Before'. The prose is dense and philosophical, which won't be for everyone, but the worldbuilding is terrifying in a cosmic sense. The quest involves a holy war, but the horror comes from the realization of what's really manipulating events from the shadows. It’s less about jump scares and more about a pervasive, existential wrongness that stains the entire epic journey.
For something with a more modern, almost folk-horror vibe, 'The Book of the Ancestor' trilogy by Mark Lawrence fits, though it’s arguably more grimdark than pure horror. The quest to save a dying world is epic, but the atmosphere in the convent and the horrors buried in the ice are genuinely unsettling. The blend isn't as overt as Buehlman's, but the stakes feel horrifyingly real.