A Jinxed Broom
Year 1, Chapter 3
You'll only control Ron and Hermione. Raise the flag to the left, then go downstairs. Raise another flag, then get rid of the blocks blocking your way. Fly across the gap and go downstairs to find another three flags on the edges, from left to right. Fix the tubes using WiLe, then send Ron's pet to reach the platform above.
After causing some ruckus, the platform containing large lego bricks will fall down. Arrange it so you can jump and reach the Blue crest piece. Arrange the bricks again so you can reach the upper platform. Destroy the stuff blocking your path then use WiLe to assemble them. Solve the cabinet pattern puzzle and the axe will clear the path for you.
Continue then raise the last two flags to get the Red crest piece. Use Ron's pet to reach the Harry (Girl Disguise) character token under the stairs. Shoot the orange cover on the wall, then shoot the painting to remove the prefect. Assemble the lego bricks again then go up the ladder.
Solve the cabinet pattern puzzle, then use WiLe to lift the pieces up and to connect them to the wall to create footholds. Create the stairs using the pieces to the left. You can't open the silver cabinet for now so continue up. Destroy the final barricade and continue through to complete the level.
Unlock the chest beside the pet tunnel to get the character token Fred (Quidditch)
After arranging lego bricks to reach the upper floor, destroy the silver obstacle in the middle to save the student in peril. Destroy the pixies to the left, then shoot the chest to obtain the Yellow Crest piece.
After getting rid of the prefect and before going up the ladder, do not destroy the box. You need to jump around the barricade. Use Crucio on the barrel to get the Yellow Crest piece.
Go up the ladder then shoot the cabinet using a dark arts character to obtain the character token of Marcus Flint.
Follow the ghost guide, then fix the bridge. Head to the other side for a scene. You'll be back in the Great Hall. There's not much to do here for now so return to your rooms for more scenes and to start the next story chapter.