[Abandoned Louv're Mine - Grundlekrug's Lair]

The bacteria and viruses spread to Rot will find nothing to infect in his vile flesh. His undead body provides no sustenance for the pathogens. The acid baring his reinforced bones will probably threaten the tiny invaders as well.

The vampire is fearless in the face of danger. He will indeed press in close enough for the Grundlekrug to claw at him. His eyes shine with red fury as he goes to plunge his sword into the thing's brain. Rot's back is shredded by the monster's claws and some of his bones snap with a satisfying crack. But his vile blade will continue to try to drain the huge beast of its blood, supplying its wielder with the healing life-fluids.