Good original art and animation
Things I really liked: the animation when kitty starts the assault on the base. It conveyed "time to kick some ass" very well.
Things I didn't like: the way the blood was drawn. It looks like yarn. Also the intro narration needs a bit of editing. Making the sentences stronger will make the backstory more interesting.
If you have time to add a beefier ending and tighten up the intro, I'd like to see how it turns out.