King Tut
Ok, I now the light the oil covered beast. I'll also cover a large area of ground with salt and tell the part to stand in the area; if the little slime beasts want to get to us, at least they'll have to go through the salt first. And since they are much smaller, perhaps the salt will deal more damage to them.
Next, I'll look around the room to see what else is here. Once the beast is lit on fire, I'd like to find a second oil drum to roll into it to cause an explosion. Does anyone remember "Roll in the barrel?" I think that was one of our campaigns.