The last couple of days have been busy ones. With the bulk of animations ready I took several hours to re-compose all the audio recordings I had into a more flowing picture, with some additional sounds gathered on Freesound.
The tunnel segments were added so as to build the scene for the final composition, as there is one moment where Four leaps off a wall, it was vital to get the position of the wall and Four's feet right, requiring the full geometry.
A re-synced animation is currently in the works, but should not take much longer than a couple of days to construct ready to send off for batch rendering. As of this post, the animations I have more closely fit with the soundscape, all that is really required is for some of the last animations to be built, some expressions added and to finish off some of the textures.