Chapter 8 - part 4 K&L: DM Guide
Last update: 11 May 2016
I guess you may have some problems throwing back all gas grenades, however you won't be going against a large group of enemy units, so you won't have to worry about losing your field of view so much. You will have to kill all enemy units. Once they're gone, order your men to stay put. Head on to the right corridor.
There's a door here which leads to a small courtyard. DON'T get too close to it, because the surrounding area is being guarded by the snipers. You will have to kill three of them. Start off by neutralizing two snipers guarding the left tower (screen). Lean out only for a few moments, so you won't end up in their field of view.
As for the third sniper, he will be standing on a roof of a nearby building. Turn right in order to find him (screen). You will have to kill him quickly. Make sure that all the snipers have been eliminated and rejoin with the rest of your squad. Proceed towards the new cellblock.
You won't find any doors or tunnels here, however it's not a big problem. All you have to do is to climb your way up to the top (screen). It'll only take you a few seconds. Ignore the police helicopter, because it won't attack you. Turn right and start moving forward.
You'll notice a new group of heavier armored prison guards. I would recommend taking them out by a surprise, especially since they'll be focused on catching other prisoners. Be careful, though. One of the prison guards may decide to climb up to you. It's a very unexpected outcome, so make sure you're ready for his attack. Proceed to the ground level and start moving towards an opened gate.
Remember that it's often wise to collect new weapons from the security guards. Give them to your colleagues if you're carrying something better. Approach the gate.
New objective: Find Shelly In Cellblock B
I wouldn't recommend staying too long in the open. Enter the new cellblock and start moving forward. You will have to turn right in order to get to a smaller closed gate. Shelly will be standing here (screen). Talk to him.