Place the hexahedron under the high wall and record a movie in which you walk with the platform under the small wall and then you jump on the hexahedron near the high wall. While playing the movie, jump on the platform with connector in your hands, then, when you'll be on the hexahedron, jump on the wall and take both devices up.
In the further part of the level, link the connector with the blue transmitter and open the last door to the sigil by placing the platform on the red button.
Throne Room (red)
Open the first red door and get the hexahedron, take it and place it with the connector on the wall surrounded with fence. Place the connector on the hexahedron and open the red doors so that you can get to the fan. Demount it and mount it near the wall so that you can return through the fence. Open another red door and get another connector.
Open the blue door by linking the connector with the highest transmitter. Use the red connector to open two doors as shown on the picture, place the hexahedron on the red button. The path to the sigil will be clear.
Get the jammer by opening the blue door. Stop the metal ball and take the hexahedron that is placed on it. Place the hexahedron with the connector in a way so that the red beam will stop for a moment. Use that time to demount the fan that can be found in the last part of this level.
Now you can put away the cube and the connector. Open the blue door with the sigil by linking two connectors. First device must be connected directly with the transmitter and placed near the red transmitter, so that it will be possible to connect with it through the hole in the wall. The other device place as shown on the picture and connect it with the first blue connector while keeping the laser beam. Take the sigil.
Open the door with a jammer and connect all possible connectors to open the red door. When you walk to the last door, place the connector as on the picture. Link it through the hole in the wall to save one connector. All that time keep the first door opened with the jammer. Set the first connector to keep the laser beam and open the last door as shown on the picture.