steampunk atmosphere, Victorian era, end of the 19th century, the action takes place in an alternative steampunk version of Gotham City, dark and gloomy atmosphere, a steampunk version of Batman is at the top of a Victorian style building, we see streets with carriages and pedestrians and steampunk steam vehicles, it's night, the moon is in the sky, a fine rain is falling, batman's cape flies with the wind, he observes the city and the streets, smoke, rain, wind, concept art, batman wears a dark brown trench coat, batman wears steampunk sunglasses