So, this one is part of Halo 4 art?! Cool! Even though I wouldn't find a reminiscence of the Halo universe on it if it wasn't for the title, it is enjoyable. Perhaps it was part of the common environment explorations?
i dont know how you have this ideas for this environments but looks great! Do you have an online stream or some video posted showing your process? btw cool little animation game, Oppidum Prototype, very unique view and sharp!