Thats, err... quite a request. You may be under the false impression that modeling is quick and easy, texturing is quick and easy, assigning weapons and effects is quick and easy. I've got some bad news, they're not.

I'd guess that 95% of people on here who can model and texture effectively will be using it to enhance their own game, or working on a mod to release.

You might get lucky, but I wouldn't keep you hopes up. Sorry to come across harsh and to the point, but its quite a task your's asking. Good luck anyway! I hope someone can help you out.