Walkthrough - Caves #2 - part 4 BAA Guide
Last update: 11 May 2016
Start off by choosing the newly unlocked Ultra Batclaw from your inventory. Aim the gadget at the loose part of the wall and then rip it off without any additional delays. Move back a little and wait for three inmates to arrive in order to see what's happened. Grab them using the Ultra Batclaw and then pull them all together towards Batman.
Once you've taken care of the inmates use your hook to get to the control station, marked as the Pump Control Room. One other inmate is guarding this area, however getting rid of him should be extremely easy. You'll secure this room automatically when he's neutralized and so you can choose a nearby corridor leading to the Pressure Control Junction.
Head north and once you've reached a much larger room you'll have to defeat two inmates. They aren't carrying weapons, so you should end it quickly. You can now go either left or right. I would recommend choosing the eastern corridor in the first place. This path will lead you to the Control Room.
It's going to be very difficult to secure the area you've just entered, mostly because enemies will be standing close to each other and the gargoyles will be placed in bad spots. Start off by quickly moving forward. The first guard should appear directly in front of you. Perform a silent takedown on him and then immediately retreat to the corridor you've just used. Fire a hook at the upper balcony and once you're there Batman should automatically hold a crouching stance.
If you have an upgrade called Sonic Shock Batarang you can now use it to disable at least one guard or preferably an entire group (in this case make sure that they're standing close to each other). Otherwise you'll have to wait for them to split up and eliminate them one by one. Remember that you can use Batarangs as long as you stay away from the gargoyles. It's always a good idea to stun a few targets with successful hits.
Once you've been successful at stunning someone glide to that area and perform a finishing takedown. Make sure to return to safety as soon as possible, because it's very likely for the reinforcements to show up almost instantly. Thankfully the gargoyles won't be booby-trapped, so it'll make your life a lot easier. Prevent Batman from losing health due to enemy gunfire.
There are also other ways for you to get rid of at least some of your opponents. One of the ideas is to use Explosive Gel, especially since you'll find a lot of breakable floors and walls. Take special attention in the area with two guards, because you can eliminate them both with a single charge. Use ventilation shafts to move around freely. You can also ignore Batarangs and rely on Glide Kicks, however in most cases it will be more dangerous than usual.
Once you've secured this entire area proceed to the main control room (screenshot #1). Enter the room and find a control panel on one of the walls. Obviously you must use the sequencer to hack into the system. Return to the main area and notice that two inmates have arrived in the meantime. Thankfully eliminating them will be very easy, even if you don't sneak up on them.
When you've finally succeeded you can return to the Pressure Control Junction. This time head west and once you've returned to the main room choose the unexplored passageway, leading to an area marked as the Pump Room. Head inside.
There are a couple of inmates below your current position. Focus on three of them - the ones carrying a rifle, a stun gun and a knife. There are two ways for you to initiate combat. You can use a Glide Kick on the thug armed with the rifle (screenshot #1) and immediately finish him off with a takedown or you can stun him and two other inmates with a Triple Batarang (screenshot #2).