This was a horrible attempt at telling the story of Dune. Visually spectacular, good acting, however not the story of Dune. In the book, Paul and Chani were solid to the end. Paul did not have that much trouble dispatching Feyd. Paul threatened to use the Water of Life to end the life cycle of all the worms on Arrakis, thus completely destroying Spice Production.
In the movie, Paul's transformation into the ultimate super being lacked so many important aspects from the book.
Overall the movie was a complete disappointment.