When you fight the Ring Wraith on the Balrog, there is a tower with steps that you can walk up. If you stay up there, the Balrog cannot hurt you, except when it takes flight.

When you fight the Ring Wraith on the Balrog, there is a tower with steps that you can walk up. Climb up it, then use Aragorn's special stab. If timed correctly you will kill the dragon.

When playing as Aragorn, you must rescue Sam from the Ring Wraith. To begin the fight, go up to the Nazgul. He will start blowing green gas at you. Start hitting him with your sword. After that, he will fly away. At this point, go up to a tower with steps. The tower will protect you when the Nazgul blows the green gas at you. Start shooting the Nazgul to kill it.