Here is my work in progress. I am using the red guidelines to make sure that the angles are the same. Also I showed to my group that if we add another level to the pyramid, it's gonna be cropped from the sides and the whole thing won't fit because of the screen width.

This is my 3-level tower. I redrew the stairs and the yellow tiles in vector and added the handrail and some torches (I was thinking it would be if the fire was animated). 

Unfortunately the fire wasn't used in the game and guys also asked me to remove the bottom level because it's too big for the scene (just as I warned earlier).