Sadly no. There were a lot of Aliens mods developed for HL2 and such but FOX are very strict to these things and shut them down pretty fast. Even the fact those mods are not being made for profit, FOX are still bitching for that kind of things. Yeah its not problem to mod the AvP games, but if you are basically creating another game with FOX's "golden" props (xeno and marine models, the weapons etc.) you are playing with the fire. They are gonna sue your ass down. You can try Natural Selection 2 tho, its "kinda" like Aliens