Bat's all folks...

It looks like I i'm about the half way point, Joker managed to get the mutagen working and I had to battel two huge brutes at the same time, and I'm betting from here on out there will be more of them. The battle was extremely hard at first, mostly due to my self imposed restriction of not using any gadgets in order to get an achievement, where I had to not only avoid then but arrange them to each each other. After I finally got the achievement I restarted the fight and used gadgets, making it much easier in comparison.