Above: All emblems from chapter 5
Emblem 1: As soon as you’re inside the clothing store and away from the gas, quickly check the shelves along the right wall for an emblem. Quickly, because eventually the glass shatters and the room fills with gas - as you can see in the video.
Emblem 2: After being rescued in the burning street by the chopper, you’ll make your way through a building. When you emerge, you’ll encounter an empty Humvee and a soldier zombie. If you turn left here, you’ll find an emblem in the back of an open truck.
Emblem 3: Once you escape out of the crashed chopper and things quiet down, you’ll see a pair of double doors in front of you. Before passing through them, check the shelf behind the marble reception counter to your right.
Emblem 4: You’ll reach a point on the roof where the boss is blocking your exit. Once you pass through the metal door, don’t proceed up the stairs immediately in front of you. Instead, go around behind them and look through the bars to find an emblem.