Defeat Paragon Protectors and allies [Captain Mako]

[Uun]

The objective of this mission (on a giant multi-level outdoor map) is to defeat 4 Paragon Protector Elite groups. The problem is that every spawn on the map has a Paragon Protector Elite in it and there's no way to tell which are the 4 you need.

[Uun]

Apparently it's the ones that speak, but still not very intuitive. Would be much better if they were named.