Chapter 17: The Black Gate

Use Gimli to jump-smash the rock that was thrown by the troll into the screen. Build the platform, bait the troll, wait until he attacks, jump away to escape and his weapon will get stuck. Next destroy the rocks that were thrown by the catapults, build the platform, then bait the troll again. Some red morgul blocks will drop down, use Aragorn to smash them and build another platform, then bait again.

Wait until the Nazgul's dragon looks up and reveals the target on it's chest, shoot it with Legolas.

Head to the left area, shoot the targets on the shoulders of the troll. Build a hatch using the rocks that the troll has smashed, use a small character to enter the hatch. Stand on the circle at the edge of the ledge, jump up to the troll and keep hitting it.

Same thing here, hit the Nazgul's dragon in the chest once the target shows up. For the armored troll, wait until it gets exhausted, then use Aragorn to stand in front of it and damage it by pressing Circle. After in runs off, go to the leftmost side and build objects using the destroyed rocks from the troll. Shoot the 3 targets to reveal the jumping bars, jump up to the ledge above, hit the rocks and build the baiting floor. Bait the troll, jump away before he hits you, then jump and walk across the troll's chain when it gets stuck, shoot him to end the battle.

Switch to Frodo and follow the studs to the final chapter.