Justice League Heroes Q&A

how do you get passed the vent system??? i realy need help
.. from: ~~nerdygirl101~~

I'm in the Sub Pens with Flash and GL, and I just got past the fans. I went down and out of the ventilation system, but the room I wind up in is empty except for two submarines and a staircase out - but I can't go up the staircase. I'm stuck, and I don't know ...

On the alternate dimension with the teleporters how do u beat that one (batman and zatana) which teleporters do u go through

how to unlock the door