Begin with opening (by hitting them) the chests on both sides of the construction.
Afterwards rebuild the well from the received pieces.
Now you will need a cog and a crank.
To obtain the cog, you have to head to the right side of the room.
Open it to obtain the cog which you’re able to mount by the well.
Afterwards Legolas should shoot an arrow into the elements on both sides of the corridor.
The door will be reinforced by a beam which unfortunately won’t endure the Orcs' attack.
You will have to face the incoming enemies.
Your next enemy will be a troll.
Start the fight by building a platform from the nearby bricks.
Afterwards you have to stand on it and wait for the troll to roar.
When you hear his voice, quickly run from the platform.
The enemy will hit it and therefore hurt himself.
Now you should probably switch to Legolas.
Head to the right side of the chamber and use leaves to reach the ledge.
There, destroy the rock and stand on the platform.
Do the same thing on the left side of the room.
Start hitting him again and attack with Legolas while he’s stunned.
Afterwards repeat the whole process on the other side of the room.
Now you will have to protect Gandalf from the horde of Orcs.
Defeat three such groups and you should reach the end of the corridor.
Afterwards turn left to find another puzzle.
This will require the cooperation of the whole team.
Gimli should break the cracked LEGO brick, rebuild the floor from the received pieces and push the cart.
After opening the door - by pressing (K) - you’re free to move onwards.
As you enter the Khazad-Dum bridge, part of the location will crumble and therefore split your team.
Start off by throwing Gimli towards the cracked LEGO brick.
The last step will be switching to Legolas and shooting twice to lower the footbridge.
Now you will have to control Gandalf the Grey during his fight with Balrog.
You will firstly have to dive (J) and grab the sword in the air.
The next fall will get you nearer to the demon.
When Gandalf lands on it, start pressing (H) to attack it with the sword.
The fight is rather short and shouldn’t cause you much trouble.
After regaining control over your team, you should head to the right.
The path is blocked by a precipice, but why not make use of the team acrobat?
Hit the rock by the machine (visible in the above screenshot) to lower the ladder.
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