Getting out of the Restricted Zone - Batman Arkham City Episode 33

After collecting the sample of blood from Ra's we follow the path ahead through doors and through a manhole but we end up underground. I traverse through Wonder City looking for the exit and meet up with Fiona Wilson again. Unfortunately, there is no way out near the intern. Instead Batman has to use the overhead vantage points and behind one is a doorway leading out. We discover that Wonder City is linked to the underground subway and both are in the restricted zone. My next task is therefore to get out of the subway. Along the way there are more goons to take out and one of them has a detective mode jammer preventing me from getting a clear picture. I successfully defeat them only to view 3 more with shields behind a wall. I find a route to get to them and have to perform aerial attacks to overcome the shields before I call an end to proceedings.