I just downloaded this game from Steam and I am really impressed. This is the most fun I've had playing a single-player campaign in a long time.
When do you unlock that futuristic armor for Batman? Do you have to complete one play-through?
The "Body Armor Batman"? That comes after finishing the game once.
I unlocked it yesterday after beating the campaign in under 24 hours time. It was a much better story than I expected. Now, I have to psych myself up to solve all of Riddler's puzzles. I have a long journey ahead of me...