Killer instinct

How do you hone and sharpen your killer instincts?

By getting perpectually angry over and over again, with the same tot, getting familiar with the bastards who planted this angst and letting this frustation manifest. Then channel all this anger into strength to shape and train your mind, body and reflexes to the pinacle of your phyical self, while preparing the inner devil to wait patiently and lurk. When the time arises, they will be dealt with, with the best destruction you can muster and their pleas will be drowned with the disintegration of their bodies and souls.

In one swift, deadly blow.