1st pass ground floor
I've now taken a first pass on the ground floor level and dressed it with props, pathing obstacles and opportunities, alternate paths and a semblance of a golden and critical path in the first section of the level. These additions should allow the player to move from cover to cover in a bid to avoid guards. There are still multiple paths of traversal right now, but the addition of mechanical security later today, such as cameras, tripwires etc, will limit these options. Here's some screenshots: