New Orleans Holocaust (The Assassin Book 02‪)‬

Robert Briganti is the Assassin. Ruthless, indifferent to his own survival, he lives only to destroy the Mafia. This time, armed with his hand-picked arsenal of superweapons, he moves south for his most savage hit: a Mafia summit conference in a New Orleans motel where no one outside the syndicate can get in, or out, alive.