Of course, some obscure company made a couple of resin gigeresque wall pieces a few years ago, it pops up here from time to time

If you can find any images, it'd be a nice source of sinpiration...
I agree that the third wall test piece loks the best, although the first one is ok too

Maybe you can experiment with a glossy finish, on the movie stills the walls look pretty smooth and wet. IIRC one of the marines in the movie even says that the temperature and air humidity are very high.