These two panels exemplify what’s wrong with this book. Batman doesn’t think of what he does as a “job.” Miller isn’t really writing a Batman story here, he’s writing a Sin City story with superheroes and making the famous DC characters fit within his mold. (He did the same thing but much, much better in his original graphic novel Holy Terror.)
Speaking of Sin City, his art in these four issues isn’t anywhere near as appropriate (or good) as it was in The Dark Knight Returns, but he does do some very interesting things by using style to convey mood. Characters will appear cartoonish, oversized, undersized, etc., depending on what is happening in the script.
If the script were better, this would have been really, really interesting.