Batman Question

Finished batman: Arkham Asylum on hard mode and now i'm going after the riddles. ive forgotten how to get into the south part of medical facility so plz help.I know its not the door and its not the hole on the left roof. :p

I think you have to go to the roof of the Medical Building and blow up one of the walls on there. There shold be a door there that takes you to Maintenance Acces or something.

this should help you out.

Here

he goes through each of the areas.