Marius felt the weight of the girl lifting up and away from its body, and the unnatural frame wrenched itself into an oddly beautiful mid-air twist, blood spilling from its wounded shoulder in an acidic gush. Sand flew as it landed, and it realized its mistake too late as the re-fashioned sword lanced through the air.
The weapon caught it dead-center, piercing its side with a sickening crunching noise as it splintered ribs, travelling through its body to punch out on the other side, and Marius yelped with the agony of it. The sound rolled out on all sides, echoing across the desert there in a night, a distress signal. O Mother, I am sorely wounded...
It staggered hard to the left, snapping its terrible jaws uselessly at the air before turning its great head towards the spear as if to extract it. The wolf's hind-quarters skidded in the sand, leaving claw marks. Blood poured from the mortal wound, and it yelped again, weaker this time, struggling to pull the hateful thing loose. Struggling and failing.
The beast collapsed on its side, pushing the weapon back out through the entry wound and tearing it wider. It flopped on the sand like a fish that had just been caught, twitching spasmodically even as the spear dislodged and fell to the earth. Marius released an unearthly howl as if at the unfairness of it, and blood sprayed from its mouth as something within ruptured. Claws raked the stained sand, as though in death the thing could strike one final blow.
A final wet, rattling gasp, and then all was stillness. The great Wolf was dead.