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), we see batman face, steampunk sunglasses, storm and lightning in the sky, red and yellow ambient street light, Dieselpunk Batman,greasy, highly detailed, intricate motifs, organic tracery, perfect composition, digital painting, concept art, sharp focus