Even if you get the "MediaFire Exclusive" file, the experience is rarely perfect.
The official Definitive Edition (released in 2021) runs on Unreal Engine 4. The PSP, even with the powerful upscaling features of the PPSSPP emulator, cannot natively run Unreal Engine 4 games. Even if you get the "MediaFire Exclusive" file,
At least 2.5 GB to 4 GB of free space for the ISO file and extracted data. Even if you get the "MediaFire Exclusive" file,