Item description:

On the save loading, go to the Wreck room and complete the last level ("Super Rushed"). On completing it, the trophy will pop.

Then, go to the main console, press triangle and select "Global Conflict". Go to the final location, Moscow Global Offensive, get a good team together (at least 2 of my characters are already level 20) and complete it. It's a pretty long level, but at least the previous 11 regions are already in the bag. Complete the level and again the trophy will pop.