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I've completed the maze and the battle with Poison Ivy. I'm now at the outside of Arkham Asylum, I think.
There is an orange and purple truck on the right side next to a gate that needs a bomb. There are elevated platforms and orange handles that need the power suit. I currently have the sensor suit, and have battled all the thugs there are, and smashed everything giving legos I can find. There is also an orange-handled turnstyle I need to turn.
How do you get the power suit? This is the key needed to proceed! Also, how do you get to the raised platforms (to get Robin's suit)?