The mission starts with you climbing up and then descending back down. About a quarter of the way, you are presented with two options: Taking the Rooftops, or sticking to the ground - Both have a decent share of difficulties and stories to tell. At about halfway through the map, there will be a building that will link the rooftops and the streets, giving you a second chance to choose a different path. The final area of the mission will have a different outcome depending on the choice you made.
Goal of the mission: Replayability, exploration and story-telling - I want the player to be fully immersed before making it to the final area.
The difficulty of this mission is: balancing, pacing and definitely optimization (I fear that this mission will be taxing on PC hardware).
I'm considering sticking to this style throughout all the cut scenes, I'm glad my work inspired you!