Besides awful special effects resembling 1990's video games, and historical mistakes (even according to Polish version of Wikipedia the battle was caught on September 12, not 11th) the movie is a cesspool of anti-Islamic propaganda.
Scene after scene, line after line it pukes anti Muslim texts. It also draws a parallel between the XVII century expansion of the Ottoman Empire in Europe and the influx of immigrants from mostly Muslim countries in recent years. Save yourself two hours of your life and watch reruns of Bewitched. It is loads more intelligent and artistically sophisticated.