In order to reach your destination, REC is used to open the east door situated in the Loading Bay, you’ll have to hack a console in the following room, and in the end go after the path to arrive at the Boiler Room. And you will be appointed to arrive at the Boiler Room. To begin the mission, you’ll have to interact with the tied-up Harley Quinn. You’ll receive Freeze Blast Grenades, after finding the Boiler Room. Finding the Boiler Room for a latest gadget is your mission. This mission can be accessed after your next visit to the Steel Mill. You are rewarded with a Mine Detonator Upgrade, after being victorious in the mission. There are undercover police in the Iceberg Lounge of the Museum, your mission is to interact with them. This mission can be accessed by questioning Mayor Quincy Sharp. You are rewarded with a Grapnel Boost Upgrade along with a Batwing Trophy, after being victorious in the mission. Completing two sets of gliding exercise in the industrial territory is required, in order to finish the side mission. This mission can be accessed either before your initial visit to Steel Mill or later on during the campaign. The progress of these side missions can be seen by pressing X on the map of the city. These missions are very helpful in unlocking special gadgets upgrades. Batman Arkham City Side Missions can be returned to after ending the main story. You’ll see few particular faces while going through the side missions. Officially they are not initiated till the time you explore the circumstance further. There are many civilians in Arkham City some you’ll find unexpectedly who may need your help. The toughest side missions are completed with the help of maps created by Xx Overkill VR. By unlocking upgrades you’ll receive guidance to finish all the challenge rooms. Therefore, these side missions should be completed.

These side missions don’t change anything concerning the Main story, they guide you to unlock unique gadget upgrades.

You can either receive a side mission during the main story or you’ll have to be on particular part of the map do receive one.

There are total 12 side missions available in Batman Arkham City which are accessible throughout the campaign ( walkthrough).

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