Insane.

Warning: This one has a bit of violence. Not much, but it ain't gonna help the faint hearted and weak stomached. Maybe.
I tear him apart in a blur of red,
why can't I see anything?
Then he comes again,
didn't I just kill him?
So I fight him again.
But then, as I blink open my eyes
and gaze at nothing,
I realize.
I've become completely and utterly
insane.