I have a confession to make. I never beat Harley's DLC bc I could never find the entrance to her hideout when you control Batman. Everytime I searched on the map, Id go to the marker but could never find it, get frustrated and turned it off. I finally decided to just watch a walkthrough on YT and went through the thing. It was good but didn't realize it was so short, especially playing as Robin, which I expected more of. Its too bad they never patched him into the main game. Its not easy coming back after a long time bc I forgot how to play. Simple things like gliding, I had to relearn and forget about combat. I got the platinum on AA, but I don't think I have the patience for this game bc there is so much more to do.