Prince of Persia: Warrior Within

Story Related.  Cannot be missed.  This fight isn't as easy as the others, but it is still totally doable. The Empress has only 2 combos and will keep spamming them till the end of the fight. I suggest that you avoid her hits instead of parrying them, since she will often end her combos with a low hit attack, which will completely ignore your defense stance and make you vulnerable to her next strike. Simply stay a little away from her as she attacks, wait for the end of the combo and then strike back with a short combo such as if you have an off hand weapon, or, if you don't. After her life bar goes down a bit, a little scene will be start. At the end of it she'll be immune to your attacks and will start attacking you with sand tornado. Simply keep dodging ( plus ) til the end of this short sequence where she'll start attacking you normally as before. Repeat this tactic til The Empress dies. The trophy will pop right after the boss fight.