There were three requirements to reaching Divinity.
Limit breaking.
Mortal Binding.
Ember Tasting.
These requirements took different shapes depending on the world an aspiring combatant was born on, but the path usually looked similar.
There was no order to completing these requirements, but most experts completed Limit breaking first.
Limit breaking was simply the process of reaching the peak of the established power system in the world one was born in. But of course, this only applied to Rich Worlds. Only they could nurture a power system with enough value for Limit breaking. This was why worlds like the one Luserus built could never produce a Divine combatant and were subdued easily by the Immoral.
In Aigas, Limit breaking meant reaching the peak of the Beyond The Veil Stage: Level 100.