Batman arkham city - Harley Quinn's Revenge Part 4 Ending!

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Batman Arkham City Harley Quinn's Revenge walkthrough with commentary part #4. This is the Ending for the story DLC.

Batman Akrham City Walkthrough & DLC maps - http://www.youtube.com/playlist?list=PLA240D900F373A51F&feature=plcp

*Harley Quinn's Revenge Story DLC*

Part 1: http://www.youtube.com/watch?v=WhiDww_NCCQ
Part 2: http://www.youtube.com/watch?v=O3-zdGTRNwg
Part 3: http://www.youtube.com/watch?v=O_a0JW8e-Fc

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