you've improved a lot since the last one.
I remember seeing it, and I have to say this one is much better. You've added sound and a life bar which makes it more entertaining. For the next version you should finish the fight.
So it doesn't loop, put a key frame at the end of your movie with a stop command on it.
To do this add a keyframe at the end of the timeline, select that frame, press f9, and in the space that pops up type in stop();