Creating scene 1 part 2, "The temple of doom"

Previously in creating this scene, I ran itno some problems regarding the letter being rendered as completely opaque.
This issue was fixed after many attempts at finding out what the problem was.
The problem was solved by changing the letter A's properties in the rigid body properties box. To fix it, I had to check the box marked "unyielding" and also set the geometry to "concave mesh".
After this, the A was no long opaque.
Continuing from this stage, I added walls to the model, and introduced new textures to the objects to make them feel more realistic.
I then added lighting in two places with an orange glow to give the model the feeling of being in a narrow passageway.
A video can be found below. This video is the render output of this scene.