Mass Effect Legendary Edition
45 Achievements
122-150h
PS4
Operative
ME2: Complete a mission discovered by scanning an unexplored world
74.2%
How to unlock the Operative achievement in Mass Effect Legendary Edition - Definitive Guide
You can unlock this very quickly by going to the Fathar cluster and searching the planet called Lorek. The Fathar cluster is located in the Omega Nebula, which is the starting point on your galaxy map when you first gain access back.
See Agent (25G) for more info.