Today was spent entirely on writing a sound manager that instantiates a small number of audio sources that are repeatedly used, for footsteps, the movement of bricks, etc. I've also given the world an ambient wind sound for good measure.
Here is a screenshot. The lines on the bricks currently indicate the four levels that you can pull a brick out from the wall. The player will eventually be able to punch bricks into the wall, though this will take me a while to implement.