In this mission you place trackers on the creates. You can also check a "special" create, which is located after the pump room. Both are shown in the video.
Yes. I do kill a guy. But he is a target it's your objective to take out, so it doesn't count in the stats. This one isn't done in one take, compared to the first mission. That's cause it's a rather isolated level, with several risky parts. Second last tracker took me hours to do perfectly.