PREDATORY MOVES - VENTILATION SYSTEM
   
 
Arkham Asylum is full of vents and ducts perfect for getting the drop on an enemy. Pull the grate off one end of the ventilation system and crouch down to enter it; some vents are found on ceilings requiring the use of the Batclaw to pull them down and using the grapple gun to climb up to. Use Detective Mode to monitor enemies while moving about in ventilation ducts helping you see where your enemies are, avoiding them while you set traps or take them out silently one at the time.

 






Batman