hmmm, good but...
I think this is way too ambitious for a flash project. I think it suffers from it. I get the impression you had to water alot of it down. I'm sure if you'd have the money you would do it in live action, which would be a better suited medium. To me, this isn't what good animation is all about.
Don't get me wrong though, it's certainly very well made. Easy to follow, nice drawings and sfx, a good seamless blend of 2d and 3d animation. Good depiction of the end of the world.
You want to get your story out there, you've worked hard, and I applaud your efforts. It just aint my cup of tea.