Derwin heard the sound just a tad too late. He turned, to the flash of light and sound of an explosion about three feet from his face. Both barrels of birdshot got unloaded from the shotgun into his face from that distance. The concussive force of the explosion in addition to his attempt to jump away propelled him through the wall behind him. Stunned, he was unable to use his momentum in any way, as he was still trying to catch his bearings. He rolled backwards into an old chair which broke under his weight.
Thankfully, it was birdshot which, as Dick Cheney had proved a few years ago, was not even lethal to humans, let alone a vampire. As he stood up, he could feel his face healing, the tiny pieces of copper falling to the ground around him with a clinking sound. He stood up and got his bearings just in time to take another shot to the chest from the same gun, same ammunition. Apparently, that was all the guy had. The blow once again knocked him backwards, this time through a window and out into the open. Fortunately, it was dark. And this time, he hadn't been shot in the face, so he was able to roll with the blow, and had it not been for the fact that the hill sloped steeply behind him, would have stood up smoothly. As it was, the sloping ground caused him to, just as he was standing up, tumble down the hill.
Derwin came to a stop about thirty feet down the hill. He drew his own guns, a pair of Desert Eagles with customized explosive rounds. As the vampire that had shot him came down the hill with a sword, Derwin stood up, aiming both guns. The vampire smiled and stood straight, giving Derwin a clear shot. Apparently, explosive rounds were not something he knew about. Derwin fired two rounds per gun, opening a hole the size of his fist in the Vampire's chest, which began to grow as the vampire began to burn. He opened his mouth to scream, but Derwin clipped one more round into his throat for good measure. Turning, he walked down the hill, towards the town below him.