Goodnight Mr.Bahir

When you exit the elevator on the 19th floor, head left towards the store. You'll see a group of people gathered by a door. Talk to them, then use your lockpick skill on the door.

Enter the bedroom and speak with Mr. Bahir. He'll ask you to find one of his guards, Yusef, who's on the roof.

Head up to the roof. Turn left when you reach Rahim, and you should spot Yusef sitting nearby. Talk to him to learn about where he acquired his goods.

Now, make your way to the location Yusef mentioned. It's not too far from the tower. As you approach the building, you'll find a bunch of Biters swarming the entrance. You have a couple of options here: you can either fight your way through them, or you can try a stealthier approach. Climb the building to your right and jump over to bypass the immediate threat.

Once you're on the other side, talk to the Boss. After your conversation, he and his men will turn hostile and attack you.

You'll need to take down about 4-5 of his guys, plus the Boss himself. It's a good idea to deal with the smaller enemies first so you can focus on the Boss with fewer distractions. Remember to utilize your dodge skills and toss some throwing stars if you have them.

For a strategic advantage, grab one of the propane tanks in the area and try to detonate it. This can deal significant damage to your enemies.

After you've defeated everyone, you'll unlock this location as a new SAFE ZONE.