Above: All emblems from chapter 1
Emblem 1: Immediately after you pass the section with the alarm, you’ll head up a few steps into the bunk room (labeled). Check to your right as you enter to find an emblem.
Emblem 2: After a large firefight, Ada will map out her escape plan. Walk into the next room and you’ll notice a support column with a control box on it. Check the other side of the column for an emblem.
Emblem 3: As you’re escaping the floodwaters, Ada will say “One slip and I’m going down with this sub” as she climbs a ladder. After climbing said latter, turn left and crawl under the opening you see. Take out the lone baddie, then move forward and turn left. You’ll see this emblem next to a ladder.
Emblem 4: After escaping the floodwaters, you’ll run into your first bug monster. Run past it, hop through the door, and turn around to your left.