The first time I saw your map, I thought "Awesome man, an AVP map finally!" Then when I played it, I thought different.
Bad Points:
Strange how the creeps periodically die and spawn in bases, though I know it was deliberate.
There are hardly any custom models in this map! I mean, please replace those god-damn spiders with real aliens and the damn Draenei with real Predators!
The buildings weren't exactly exotic.
In your in-game map description, notify players which normal races are aliens, predators, marines (Write something like Marines = Human/Orc, Alien = Undead etc).
No map preview, I mean come on, AVP images are everywhere!
Perhaps add some heroes and reduce all those units.
Good points:
I liked the Marine race.
Cool face-hugging system.
Generally fun to play, ignoring the crap models.
Nice, long, detailed unit descriptions.
Terrain is reasonable.
Overall:
A map with an awesome theme and idea, though lacking in a lot of areas. 3/5 and no vote. Keep trying mate.