Coulda been better
Not bad.
The story was marginally ok, but would have been cooler if it was turned into a game where people were allowed to make choices on where the marines went and how they reacted.
The effects were kinda pointless, but did help with the feel of the story.
Maybe make it 3d and add more to the story, and it shouldn't be too bad.
I'm not harsh
I can't really assume anything on the part of the author, but I'd assume from the art hes young and just getting into movie making.
You do good mood music, and your backdrops are fairly good. The story flows well, but is somewhat unoriginal (but what story is...on the portal afterall.), but then, at the end the only real action scene of the movie is played out in the viewers imagination. Not that theres really any action in any of the other scenes mind you.
I'm going to give this a 2 because at least its not yet another stick figure movie...for which we can thank our respective gods, deities or super egos for, I suppose. And I think the author is making a genuine effort to submit worthwhile, if some what underdeveloped content...which is more than I can say for...oh, about 87% of the portal entries I've seen today.
Keep on plugging away at it. You know where you want to go, and its obviously producing well presented flash epics. Now, just walk the line between this production, and your masterpiece, and you're there.