First of all, fire’s no good! Total destruction’s no good. So, fie to your fire! Get it out of your head. This island’s got a powerful mean memory. It remembers a corpse. Reduce one of these shambling cadavers down to fragments and vapors, and the island just remembers it back into being.
That said, there are other methods. Trial and error, as my father, gods damn his soul, used to say. I was a sexton by trade, back in the Old World. If anyone’s going to figure out how to make a dead body behave, it’s going to be me. I’m assembling this manual, such as it is, from what I and others have tried and continue to try. Lots of trials. Lots of bloody errors. You just keep hammering a nail till it submits. Father said that too. Anyway, here we go.