The independent workers with Shepard and co. among them have started their attack on Archangel, but they get to observe direct the truth in all of the gossips around FUT 16 Coins Archangel's eliminating capabilities. When you restore management of Shepard, the actual procedure now is to secure Archangel and avoid him from dropping to these weaklings.
Archangel's wellness gauge seems to be RS Gold on-screen and paths his current energy. To be successful in defending Archangel, though, you will need to convert on these unaware independent workers. These independent workers are engaged with Archangel at this time, but once you start flame on them they will redirect their interest and cure you in type.