This Seeking Tech video guide will show you how to get the Seven Wonders Expert trophy and achievement in Crisis Core: Final Fantasy VII Reunion.
This will unlock when you do the following:
Learned about all of Nibelheim’s Seven Wonders.
This trophy is extremely missable since it is easy to mess up if you move in the wrong direction during Chapter 8 and Chapter 9. So, make sure you use multiple save slots.
You can find the full video walkthrough of what you need to do, with time stamps, below:
1:08 Wonder 1
3:19 Wonder 2
7:19 Wonder 3
28:34 Wonder 4
33:20 Wonder 5
37:48 Wonder 6
1:01:07 Wonder 7