How to kill a goblin 

First go to Grim Ghost Graves alleyway and 

Set some smoked gouda cheese down next to the drain.

Next, wait until a goblin comes out of the drain.

They should take the cheese and eat it,

While they are eating the cheese, get a net and capture it.

Then sing it a soothing lullaby  and wait patiently for it to 

drift off into a long slumber.

After that, take it to Grim Ghost Graves beach and release it 

into the wild waters of the ocean.

Finally, give the goblin some rabbit soup for his last meal.