I checked out the model and it's good, but it's only really gonna appeal to people who are making an alien clone (and no one is).
To be honest, you request is very vague. I mean, everything in doom 3 is textured. What sort of textures are you lookin for? Character stuff? Walls? grates? machinery? There are so many things you could need textures for.
Games like doom have their stuff custom made. There are no scifi walls to go and take photos of, so the stuff is hand painted or made from composites. The chances of picking up that kind of stuff for free is minimal.
Perhaps if you were more specific, you'd get a better result.
In the end, asking for this kind of thing is only gonna mess up your development cycle. If someone makes you 2 really good textures, what are you going to do when you need more? You can't go back to them and ask for more, because that'd be leeching their generosity, but if you do your own, or steal some, then they won't be consistent with the style. So, as all movie bad guys say... if you want something done, you have to do it yourself. And if you can't do it yourself, you should damn well learn. Because knowledge is power....oh yeah, and because no-one will do it for you.
