Slaughter you mean?
And I think I see the subtle reference to CS:S there.
Graphic needs work. I know it's a hard thing to do, but it needs to have a set shape, last time I checked chainsaws didnt look like a kukri with teeth and a voicebox at the end. Do the shape first, then shade it, then define it. In that order.
www.pixel2life.com has alot of tutorials on pixelart, providing it's still around.
I cant do pixelart for crap, so I admire your attempt. Keep em coming.