I just caught up on this project, but I wanted to say that it is really looking great. The amount you have done with so little as great. I myself am looking into possibly making fan-films, and this serves as real inspiration.
I would really like to see more of the Aliens, they look really good.
If anything, I would deepen and darken the colors of the Pred's face, it comes out too light in CGI form. But wow is the way you directed his motions great.
Dont fall into the same flaws with fights that Reqium did, as in making the aliens look too much like pushovers..even if you are more of a predator fan it would seem more intense if they seemed more dangerous.
As for humans, Im curious to see how it shapes up. Oh, for Blood, you probably know this but Ill say just in case. You can use Syrup with red food dye and a little blue. It looks pretty decent, here's some in action I made:
http://uk.youtube.com/watch?v=Yv6-79DucrQ (Jump to around the 2:20 mark)
Anyways, I really cant wait! Any previews of one of the fights?