How to Level up in ‘Crisis Core: Final Fantasy VII Reunion’

It might seem like a headache to wait for a “777” to come up during battle, but reportedly, this level up system isn’t entirely chance-based. For the original Crisis Core, players have crunched the numbers and discovered that there’s a method for influencing more level ups from the DMW.

In a 2009 GameFAQs thread, one players deduced that “the higher the difference between Zack’s available level [at certain points in the game] and his current level, the greater the chance he’ll level up.”

Source: https://www.distractify.com/p/how-to-level-up-crisis-core-reunion