When you step into the circular room, the floor will rise up until you are level with the fighting stage. There will be a short intermission sequence, followed by the fight. As soon as the intermission sequence ends, roll to the side to dodge an attack. Repeatedly roll to the side until the Vizier charges at you. Roll to the side once to dodge it, then charge at him and double slash with your father's sword. He will block the dagger, and any slashes after the second one. Once you have hit him twice, roll backwards or to the side to repeat the process. If your attack misses for whatever reason, do not try to attack him until he attacks you again. There will be three times when the Vizier will fly up and throw statues at you. Just keep running left or right until you see the statue, then roll in the same direction to dodge it. After awhile, the Vizier will fly up and crumble one of the walls. The chunks of stone will hover around in a circle around the center of the room. The Vizier should be on the opposite end of the stage. Make your way through, then wall run up the columns behind him. At the top of your wall run, trigger a speed kill to cut one of his wings off. If you make a mistake on the wall run or the speed kill, or the Vizier moves before you can activate the speed kill, just try again. Do not get caught on the edge. If you touch the railing it will hurt you. After a few speed kills and you cut off both of his wings, he will fly up and take the boulders with him. Never stop moving, because he constantly shoots sand attacks at you. Make your way up until you get to a beam. Activate the final speed kill sequence and kill him.