Lego Harry Potter Years 1-4 Walkthrough Part 23: Goblet of Fire, Secret of the Egg
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You will then have to go all the way to the bridge, and then go back into the hallway, all the way into the area with the bathroom and all. Go up the steps, and destroy the metal pipe works.
While you are here, you might as well levitate this strange contraption in a maze. Your friends will help you along the way, and when you get this thing to the end, it will become a snail and leave a trail of studs. It will then turn to Gold Brick 76 before exploding into more studs.
Chapter 4: Secret of the Egg
The first part of this level is all about getting four green circles in the proper place. The first is located near that area, and you can put it into place if you want. You might want to get some other rewards first.
You can hit these boxes in order to get a crest portion. Box 1/4, 2/4, and 3/4 are located over the sinks on the left. Box 4/4 is all the way to the right. You can then get the Green Crest Portion.
There are also three torches in this area. Torch 1/3 is in the corner by the painting, and Torch 2/3 and 3/3 are on the right side of the room. Get them all and have yourself the Yellow Crest Portion.
There is a boggart/dementor that comes out to greet you. Shoot it and get Character: Cedric Diggory.
As for the green circles, here is how to get them.
If you hit all of three of the overflowing sinks on the left, this will cause a tank nearby to overflow. You can pick it up and put it into place. I’m sure you have noticed that crest portion in the tank, but neither Harry nor Moaning Myrtle are strong enough to pull the chain.
If you shoot all the lockers on the left, an umbrella will fall out. You will have to shoot it to open the umbrella, and then you will need to levitate it into place. The wizard in the portrait shall grab it. He will use the umbrella to plug something, and throw you a green circle as thanks.
You will then need to use magic to levitate a barrel, and yellow things will fall out. Levitate these things to form a toilet lid, and then levitate it so it shuts. The other character will then come through and make certain that the other lid shuts. This will back up the pipes, and a toilet will overflow, causing another green circle to come up.
When all four are in place, you can go. Be sure that you have all of the studs here, or you won’t be able to go back and get them.
In this place, there are a lot of studs to get. There is that metal locked box, and, if you go through all the arches here, you can get some more studs.
There will be a box with a lock on it, and you can bust it and get Character: Fleur (Lake Task).
You will then need to levitate a broom and clean off the stained glass window. The mermaid within will be throwing cages of what looks to be scorpions. You can levitate them until they form a pipe, and you can then levitate to form a train. This train makes steam, which forms a raincloud. Levitate the raincloud so it is back on the mermaid, and there will be water there. She will then throw a handle. Levitate this handle into place, and the level will end.
Go ahead and move on to Part 24.