I will try my best to describe how to defeat the Mouth of Sauron (MOS) with Aragorn, Legolas or Gimli.Aragorn:With Aragorn, I found it easiest to use the power that allows you to summon the dead to kill off the Mouth's shield minions, and then use the knife throw power and defeat the mouth's poison archers. After you have done this, he should come after you. Hide behind a bush and use the swordthrow power at him until he gets too close. Then run to the side of the bush opposite the mouth and do the same thing, until you have killed the mouth.Gimli:I found that with Gimli, use his axe throw power and throw axes at the mouth's shield minions, until you've defeated them. Then, use axe throw to defeat the posion archers. After you've done this, the mouth will come after you. Hide behind the nearest bush, and use the axe throw to throw axes at the mouth. Do this until he gets too close to you. Then run to the side of the bush opposite the mouth. Do this until you've defeated him.Legolas:Hide behind a bush and shoot at the shield minions. You might want to use the power that allows Gwahir to attack one of the badguys to defeat the shield minions. After you've defeated the shield guys, shoot out the poison archers. Then the mouth will come after you. Run to the nearest bush and hide behind it. Shoot at the mouth until he gets too close to you. Then go to the side of the bush opposite the mouth. Repeat this until you've defeated him.