I made and added torches and a chandelier. I’m afraid that they may be too small for the needed light.
In the scene
The level occurs at dusk, so I altered the Skymap
I also recreated the scene with modular walls and columns and I added several important objects.
A maze in the final tower
And the cage containing the sword. The block is wood and it has a cut in it so the sword can be moved in and out.