Put the sword parts into the small container and insert the slider so that you can see the arrows. Then, move the sliding element all the way up and position the container vertically in front of your lips. Blow sharply into the left hole. Remember to check the slider is blocked! Insert the container into

The obtained parts can be put in the space between the torches. Pay attention to the picture above the torches.

The pictures show the correct position of the parts. The right picture belongs to the darker part, the left picture represents the light one. Now put the parts inside while they are in the correct position. The torches should be moved down beforehand. Move the darker part to the right and the light one to

There are symbols on the side with crowns. The same symbols can be found on the broken wall on the other side of the box.

The darkish fragment can be extracted from the wall.

Some edges of the fragment match the edges of the wall.

The crowns also have symbols on them.

Note the sliders near the crowns can move up to 3 levels. Each slider connects the symbol on the crown to the symbol on one of the 3 levels. Use the fragment of the wall to find the correct pairs.

Look through the keyhole between the torches. It’s better to do this in a well-lit place. Make sure the sliders near the eye are in the correct position.

When the fragment fits the wall, you will see the correct combination in the holes. Set this combination on the crowns and find the other combinations.

Here are all positions of the fragment. Set the sliders as shown below to connect the pairs. Rotate the wheel with the crowns anti-clockwise and extract the key. If you’re done with all the other puzzles, you can take out the inner box. Otherwise check the steps 1-4 above.

When you see through the keyhole, you may distinguish the shapes of runes inside. They have the same positions as the spiked balls.