Prince of Persia: Warrior Within

Complete the game with all nine Life Upgrades. When you get to the room before the Empress' throne room, the Water Sword will be there. It is the only weapon that can kill the Dahaka. For your final battle, instead of fighting the Empress you will fight the Dahaka.

Finish the game with all nine life upgrades and obtain the Water Sword.

• When you are on a cliff or platform with areas to fall off and enemies start attacking in groups, just throw them off instead of wasting Sand Tanks or fighting them all head on. This saves time, especially when you reach The Cliff as the Sandwraith.
  

• Use the following trick to easily defeat any of the large enemies that require you to jump on their backs and get hits. Use Slow when you are climbing up its back. Once you get up there, start hitting it as much as possible. Eventually, before time runs out or it has the chance to throw you off its back, you will be able to stab it in the neck and it will fall. By doing this, you will only use one Sand Tank and it will be refilled by its death. Note: Do not use any other Sand Tanks prior to jumping on its back, or else you will waste them and not get them back too quickly. Note: You may have to use two Sand Tanks while on its back if it is used too early.
  

• A good strategy when going up against a group or one of the ladies in red, near the beginning of the game is as follows. Always go into the fight with two weapons, but do not use the second one. Get all of them to go a sandy color then throw your second weapon at them. This will instantly kill them. They will drop weapons. You can pick them up and throw them at the ladies. Also, do not guard. Constantly attack instead. If you see one jumping, attack her immediately. If they get you to the floor and there is a group of them they can kill you instantly.
  

 Hold E and repeatedly press C. The Prince will start breaking the enemy's neck to kill them.

This is an easy but precise way to defeat Shadi. Attack her until you hear a large "clank", which indicates that she has blocked. Then, roll to the side of her. When this is done, most of the time you will be able to get behind her and repeat the attack. You should get to hit her about four times (and possibly up to six times) before she blocks. However, sometimes you may only hit her about two times before she blocks. You must listen for the "clank". Run towards her and do a triple combo. When she does a rage attack, hold [Block] and move backwards. When she ends her combo by raising both swords, charge towards her doing a triple combo attack. Repeat this to win the battle.
When fighting Shadi, she will block. Immediately after blocking she will try to attack. Dodge this attack by rolling to a side and somersault backwards. Let her finish her strikes before going to attack her again. Repeat the process until you win.

Use the following trick to defeat the mini-Boss that is formed from the evil crow enemies encountered in the beginning of the game after the ship level. Jump over him and slash him in the air repeatedly. By doing this, he cannot hit you. You must wait a few seconds between attacks. Also, in the last two stages, you will be on platforms; be careful that you do not fall off. When you face the crow king on the bridge, do not fight. Turn to the right side and climb on the surface. Then, climb on other side. Walk on the wall and stick to the pole. Jump to next pole. Jump to the surface. Walk on the wall and go up. Open the door by the Prince Of Persia symbol. Go inside the door to complete the level.

You must have all nine Life Upgrades to gain the final sword, The Water Sword, to fight The Dahaka and receive the alternate ending. Before you enter the Central Chamber the second time, make sure you go to the pedestal in the middle of the hourglass room to receive the Water Sword. Enter the Central Chamber to trigger the intermission sequence. Then, chase the empress to trigger the alternate Boss fight with The Dahaka. This can be a very tricky Boss (especially under the hard difficulty setting), and he may seem very cheap at first. Immediately when the fight starts, trigger the Ravages Of Time attack against the beast. Do this twice, then run around and refill your Sand Tanks. The Dahaka will try to shoot his tendrils up through the ground in front of you. The best tactic to avoid them is to run around in a circle -- they will not touch you. After your Sand Tanks are filled, go back towards him. When you get close to him, he will shoot tendrils out of his stomach at you. Roll under them then activate Slow Time and hit him until his health is about half way down. An intermission sequence will start, and the beast will be hanging on the side of the cliff. Run over to him and use Ravages Of Time as much as possible. When his health gets too low, he will jump up into the center of the stage and regain half of his health. This is when he becomes angry and things get tricky. He will try to jump on you multiple times. Run around the stage collecting the sands, rolling out of the way when he jumps towards you. If he misses you, he will try to shoot his tendrils at you; just run or roll away from him. Eventually he will go back to shooting tendrils out of the ground. When your sands are full, run towards him and use the same tactic as before. When your down to a couple of Sand Tanks, fill up again. The strategy is to get his health as low as possible before he gets knocked to the side of the cliff, then use either Slow Time or Ravages to kill him off before he jumps back up again.

Block and do the attack were you jump behind her, and attack her twice. Remember to block immediately after this or she will hit you down. While fighting the first Boss after you become the Sandwraith, use slow time to easily kill it. It will rarely get a hit on you, and your Sand Tank will regenerate during this time. Whenever it runs out, immediately start slow time again. Remember to stay behind it or its attack will knock you off the platform.

Always jump over her and hit her in the air. However, if you do this long enough she will dodge it. When she does, start counter attacking until starts dodging counters, then start jumping over her again. Keep doing this process until you win.

To defeat the harder Golem Boss that throws exploding monsters at you, have at least five Sand Tanks full. Activate Ravage Of Time and hit him behind his legs (which has no armor). Then, jump on his back and onto his head. Immediately activate Ravage Of Time again so you can hit his head faster. When it wears off, activate Eye Of The Storm, then keep hitting him. You should then finish him off. Make sure you have at least two Sands Of Time slots full. Hit the back side of his legs where there is no armor. After a few hits it will bend. Jump on it and activate slow motion. Hit it several times until it raises its hand to catch you. Then, jump onto the armor opposite of where the golem is raising its hand. When it removes it again, jump back onto its neck. Activate slow motion and start hitting until it falls. Note: This tactic can also be used with the mummy.