Duel is probably the only ride in Alton Towers, which is not a roller coaster, that you would ride again and again, and again! Like similar rides across the pond in the United States, rides such as Men In Black and Buzz Lightyear, Alton Towers have themselves a winner transforming the once average haunted house ride into a zombie hunting frenzy.
However, if I were to critique the ride it would on the lines of lack of story-telling. In the pre-show you watch TV telling the contextual story, but this isn't flaunted enough. I think the ride misses a trick on that front. Despite that, Duel is very enjoyable and consistent to Alton Towers' hauntingly mysterious character.