This one is pretty glitchy. Sometimes you do secondary objectives and it counts, sometimes it doesn’t. But seems that any secondary objective as a defender is discarded. One can only achieve this as an attacker. But Underground is really the map for doing this mission and in the end it’s one of the easiest to finish. The problem is that everyone on the team is going to compete to finish them as many people get them at the same time. There are not enough secondary objective for everyone…
