Has there ever been that one character that you saw, then thought to yourself, "that guy's a bad-ass"? No matter what situation he gets in, what enemies he faces, or what happens to their friends or their selves, they continues to fight on. This is their tribute.
Alucard is the ultimate vampire. Unlike the other wanna-be vampires, he is pure bred; not born from a lowly human turned blood-sucker.
While he works for humans, he is no slave. His power is absolute, overwhelming, much more than any human could handle. His immense vampire strength allows him to wield a gun that would knock any regular person to the ground if he or she tried to fire it. On top of that, his senses allow him to see his target from far away, without even a sight.
What, you think Alucard relies on human creations only to do his killing? He can kill using any number of his vampire abilities. And while he's not killing you in some demented, showy way he can use those abilities to heal himself, such as regenerating from a pool of blood after his head has just been cut off.