We showed you a list of all the trophies of the Crisis Core remaster some time ago. Here you will find out what you have to pay attention to above all as a PlayStation player in order to unlock the platinum trophy.
A PSP classic
Finally, the PSP title Crisis Core: Final Fantasy 7 Reunion is available as a remaster for PS4, PS5, Xbox One, Xbox Series X/S, Nintendo Switch and PC, in which you can unlock many trophies and achievements in classic style. However, they mainly cost time and you can miss many of them quickly. So it is important that you have to be patient if you want to unlock the platinum trophy (mainly on the Playstation).
In order to unlock the platinum trophy, you only have to finish the game once, but you can almost miss all the trophies if you are not careful. Several are, for example, linked to a specific action within a chapter. In addition, there are numerous missions that one must have accepted by the end of Chapter 7. Otherwise you will no longer have the opportunity to do so.
Since there is no chapter selection in Crisis Core, you have to wait for the next run or load an old savegame if you miss a run. The new game plus cannot help you either, because even if you can keep your equipment, the progress in the missions is not retained.
Trick
You actually have to finish the game on the "difficult" difficulty level, but there is currently a trick. Just play the game on normal and increase the difficulty level before the final boss. This way you can get the trophy more easily.