Defeating The Vizier:

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, then the fight will start. Immediately after 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. After you have hit him twice, roll backwards or to the side to repeat the process. If your attack misses, 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, then kill him.

When the fight begins, immediately roll backwards, then get close to him and block his attack. Attack him quickly because he is a hit and run type Boss. After you hit him a few times he will fly back and try to hit you with a piece of the arena. Get close to him again, blocking his punches, and attack him a few times. He will fly back and try to hit you with two pieces of the arena. Roll to dodge them. Then, attack him again and he will fly back and try to hit you with three pieces of the arena. Get close, block, and attack him again. The Vizier will now blow up part of the arena and there will be blocks going around in circles. Try not to get hit by them, as they can do a lot of damage. Do not rewind time if you get hit; try to conserve your sands for later. The Vizier will now fly to every other column and try to hit you with an energy beam. Dodge and get close. Run up the column behind him, which will trigger a speed kill sequence in mid-air. If timed correctly, you will slice off one of his wings. The Vizier will now try to hurt you by trying to hit you with energy beams. You must get close to him and run up the column behind him, which will trigger another speed kill sequence in mid-air. If timed correctly, you can slice off his other wing. It is easy to predict where he will go because it is every other column. Get close to him for the final time and run up the column behind him. It will trigger the final speed kill sequence, where you will stab him with the sword and the dagger. Once this is done the Vizier will take the pieces that were on the ground and form an obstacle course in the air. Look around with the camera and find a block that is sticking out. Run up the column and rebound to grab it. Make your way to the top. Conserve your sands because the Vizier will try to hit you in mid-air, and if you get hit it is a long way down. Use slow time to help you. When you get to the top you will become level with the Vizier. Jump towards him to trigger a Matrix-style sequence. Wait for the dagger to glow and time it correctly to defeat him. You will stab him and you will both fall. After the intermission sequence, the Dark Prince will take you to a dream world where the walls and platforms are yellow and black, and everything is glowing and moving. Pursue the Dark Prince and slash him every time. You are safe in this world because if you fall you are returned to the platform from which you fell. Get to the end where you will see Farah telling you to wake up and come into the light. The Dark Prince will be next to you. Do not bother attacking him because he will make two more copies of himself. Walk into the light to complete the game.