when you go down the alley next to the staircase leading to the abandoned building with the llama guard that was being held, look to the right into the dead end there. To the left you should see a raised storage area, and you should see an oddly placed Goats advertisement sign on the wall at about the second story level, and below that on street level is a wall of brown bricks. It is a new texture to DX so should catch your eye pretty quickly. Check there.

This is a situation that in the future is going to warrant a datavault image, this doesn't happen in the original map but due to the nature of the project I think it may be a good idea to give players a bit of a nudge in the right direction with a hint image since the new map has more stuff to get lost in.