To explode the walls, you need to have the detonation gun or whatever it is called. You get it from the batmobile, early in the game.
On the PS3
go to detective mode Press L2
find a weak wall
press left direction button to choose gun
press L1 and R1 to spray
when you want press L1 and R2 to explode
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well u have a max of 3 sprays each time before u detonate it so u spray once on one wall and spray once on the other wall and then press the aim button and make sure its like aiming at both of them and then detonate
There are a few different scenes in the game where there is laughing gas. In all of them, you must remain off the ground at all times - otherwise you'll die & have to start over at the nearest checkpoint. Travel throughout the room on the higher platforms/etc. From up there you will have to search the walls below you for these red switches - aim & throw a batarang at them one at a time & the air vents/circulation turns on & the room eventually clears of all gas.
its: 7881A409 E2026E0C walk through walls You need to type it in like this: Gameshark_v3 walk through walls 7881A409 E2026E0C Gameshark_v3 walk through walls walk through walls hope it helped XD
You simply click on the walls a click upgrade
first the commissioner being killed is only an illusion second go to the left of the hall and yull be in the morgue go back through the door to be back in the morgue (another illusion) there will be three bags that hold bodies, open them. the first one youll open is bruces father the second will be his mother the third will be Scarecrow, a scary batman villian, and hell freak you out.. with all of them open turn around and youll be in yet another illusion simply jump onto the gap and youll come across Scarecrow again but now a threat. youll also notice his gaze the bright light shining from his eyes avoid the gaze as it will get you killed you can avoid the gaze by hiding behinf walls or other objects youll have to keep going until you come across a spotlight come closer to it and press the run/action button and Scarecrow will be knocked out. (youll come acrooss him two more times. the third one is obviusly weird)