Very well done.
I thought you got this just right. Although you may not be able to see all the deaths (which if you really are looking to see EVERY SINGLE DEATH, there is a replay button) it still fits a good amount of killing for everyone to see. I also like the idea of progression throughout the movie. It may be just me but it looked as if the idea of ages grew so that first it was without weapons, then they accumulated weapons and finally gained supernatural powers and a mega awesome rocket launcher. When I feel that it was too short, it also leaves me relieved that I don't have to watch a 10 minute flash with 4 kills. It just doesn't seem right to know that only 2 or 3 stick men are gonna die over 9 minutes then have a whole minute on credits that probably are crap. I will enjoy watching this again til my heart can't take it. 10/10 5/5