Rolling Stone gives it 2 out of 4 stars and says, "The upshot is that Sin City: A Dame To Kill For is forced to trade on the kick the first film gave us. And that kick now suffers from stiff joints." Variety is not a fan.
Roger Ebert's site concludes,
"Sin City: A Dame to Kill For" doesn't have the electricity of the original, mainly because we've seen it all once before. Nothing new is really revealed here, either through story or style. But Rodriguez and Miller are completely committed to their vision, such as it is, and its ferocity can't be easily dismissed.Rotten Tomatoes has a critics score of 43%.