Protocol 10

Protocol 10, is the last-ditch method to control the criminals in Arkham City. By using Tyger to kill everyone inside.

How to Activate
Protocol 10 can only be activated when approved by the City Council only when the inmates were able to get a hold of fire arms and appear to be attempting a mass break out. So far it appears that not many members of the Council approve of this method, hoping this protocol would never be needed to have been activated. Commissioner Gordon even voiced his disgust at the measure.

Use in Arkham City
Once it was deemed that Arkham City lost its ability to control the weapons being leaked into the city (Provided by Hugo Strange. The city council approved Protocol 10 to kill every inmate in Arkham City. Hugo devised this plan since the beginning with Ra's al Ghul to gather all of the criminals in Gothum to one place and just wipe them all out. However, Batman managed to make it to Wonder Tower and stop it before the plan could be completed.