Monster Kill 2

He rushed in, slashing with the crescent blade. And it did not splinter. Under its edge the dusky metal of Khosatral's body gave way like common flesh beneath a cleaver. From the deep gash flowed a strange ichor, and Khosatral cried out like the dirging of a great bell… Then Khosatral turned again, flailing the air with desperate blows, but Conan, fired to berserk fury, was not to be denied. As a panther strikes down a bull moose at bay, so he plunged under the bludgeoning arms and drove the crescent blade to the hilt under the spot where a human's heart would be.
-	The Devil in the Iron (chapter 6)