Originally Posted by Drucifer82
Also, Gotham Base Jumper is not in this list. Does anyone know how to get it?
Climb on top of the Wonder Tower; jump off and glide around for one minute.
What I did was get to the part with the two extended rods with the wire connecting and flew around the tower using my Power Grapple to maintain height and speed on one of the extended rods.
Power Grappling doesn't stop gliding - but if you land or put your two feet down on the rod/cable it resets.