How do I get into the mansion in Batman Arkham Asylum?

Head down the stairs towards the security gate and flip around to find a grate near the ground. This leads back to a Riddler Trophy (Arkham Mansion Riddle #26). The door out of this room is locked so you’ll have to grapple above it. A vent on the ceiling here can be accessed via your Batclaw.

How do I get to Arkham North?

Arkham Island, North You’ll have to glide down to the middle floor of the building to get it from the top. On the bottom floor is an arched doorway with the body of a question mark on it. The dot is on the ceiling above (Arkham Island, North Riddle #6). You’ll have to line this up just right to solve the riddle.

How do I get into intensive treatment Killer Croc?

Hop up onto the vent and drop into the cage with the Riddler Trophy to snag it (Intensive Treatment #30). Exit this area via a grate up high on the west side of the room. You’ll need to crawl to it, then grapple up onto a ventilation duct. Drop down and crawl towards the Intensive Treatment Lobby.

How do you get into the Botanical Gardens in Batman Arkham Asylum?

Check the bench in the northeast corner for a Poison Ivy Interview Tape (Botanical Gardens Riddle #8) before heading down the stairs to the security door. Hack the panel to the left of the door to gain entrance to the Botanical Glasshouse.

How do I get to Killer Croc’s lair?

Perform a Silent Takedown on a nearby guard and then mine his body with Explosive Gel. You can also keep an eye on him with a Batarang handy just in case. When his buddies come to check on him, detonate the gel and move in quickly to perform a few Ground Takedowns. Add more gel and back away to repeat this process.

Can you go to the Batcave in Arkham City?

Actually there is a Batcave in Arkham City, although you can’t access it through the story mode its just a challenge map in Riddler’s Revenge which you you have to buy through DLC.