You will have to secure several casino rooms. Just as before, you will come across a large number of hostile units. You will have to use the rest of the team, as well as all available cover points in order to succeed. Thankfully, you won't have to rescue any civilians.
You start off inside a well-known tunnel (#1). Gather the rest of the team around your position and start moving forward. You are getting closer to a much larger room. I would recommend ordering your men to hide behind a nearest cover. Use a similar spot. The first group of enemy soldiers will appear on your right (#2). Go ahead and take them out, preferably from a larger distance.
I would recommend staying here for a longer while (#1). This would allow you to neutralize the remaining hostiles, especially since most of them will try a frontal assault. After that, make a few steps forward. I would recommend choosing a path that's located on your left (#2). Thanks to that, you will be able to take out several other bandits.
Start moving forward. There are some enemy units on the opposite balcony (#1). I would recommend hiding your team behind one of the larger pillars. Don't get too close to the glass balustrade. Additionally, some of the terrorists will use ropes. Some of them might actually get closer to your position (#2). Take them out as soon as possible.
You will have to help your squad members to take care of the remaining hostile units. Most of the terrorists are hiding on the lower level of the casino room (#1). Ignore the smoke grenades. These objects won't interfere in your assault. Keep pushing forward. Don't forget about the rest of your squad. Send your teammates to one of the available cover points (#2).
Once you've reached a corner of this room, you will have to lean out carefully. Some of the terrorists are occupying the stairs (#1). Kill them quickly, before they decide to throw grenades at you. Now you should start running towards a second balcony (#2). It's going to be risky, however doing this would allow you to kill a few additional units.
Make a few steps forward (while standing on the second balcony) and turn right. Go ahead and eliminate a few terrorists (#1). Most of them will be surprised by your attack, so it shouldn't be much of a problem. Make sure that the rest of the squad is providing help during these fights. You will have to kill at least 3-4 terrorists (#2).
Once you've secured this part of the room, go back to the stairs and order your teammates to go to the lower floor (#1). Your men must hide behind one of the larger objects. There are still some terrorists here and you will have to hunt them down (#2). Kill them from a larger distance. Don't let anyone get closer to your team!
Be careful. A second group of terrorists will arrive here very shortly. Just as before, many of these soldiers will use ropes to slide down from the roof (#1). Try and eliminate at least one of them right away. As for the rest, you should be hiding behind one of the pillars. Hunt down the remaining terrorists from here (#2). I'm sure that they'll try a frontal assault and that's your chance to get rid of them.
The third group will appear near the right corridor. You will have to go there now. If you're using a good cover, you should be able to kill all of these guys without having to ask the rest of the team for help (#1). Keep moving forward (#2). Make sure that your teammates are hiding behind larger objects, so they don't get exposed to enemy fire.
You should be getting closer to a new passageway. It leads to a second large room (#1). Hide behind one of the pillars. Make sure that the rest of the team does the same thing. Start shooting at the visible enemy soldiers. Once they're gone, move up closer to the stairs (#2) and check the entire area for additional hostile units. Use your tactical map frequently.
You should be getting closer to a large set of glass doors (#1). I'm sure that you've already secured this area, so you probably won't encounter any new units. Enter the new corridor. You will find yourself inside a smaller room. I would recommend that you take a closer look at the tactical view (#2). As you've probably noticed, there's only one path leading to your current destination. Go there now. You won't encounter any new units. The game will begin loading a new map within a few seconds.