OOC II
There are no stairways or ladders (other than the ladder you used to climb up), and definitely no windows on the roof. Like Three Elks said, you can grab the ladder and move it so you can climb down into the courtyard.
For reference, Lucien is inside the building, Terminax is in the courtyard, and Three Elks, Lathan, and Rissa are still on the roof.
I'll move on to the next round once we hear from Terminax.