Danir's Journey: The Cave Guardian

Danir kept close to Gregor's back as they inched further into the darkness.
Escape had been impossible; they'd gone too far.
An able thief, Gregor seemed up to the task of finding their way in the dark, as their torches would no longer ignite; the air had become saturated with mist.
The shuffling sounds were growing in volume, and Danir readied his sword for whatever awaited them.
A greenish glow began pulsing with the sounds of movement ahead.
An unholy roar pierced their ears, as the pulsing light brightened, revealing a large, inhuman form.
It charged them, bellowing with rage.