Taking an Ascendancy is an important part of customizing your character build in the latter half of Path of Exile 2. In this complicated, Diablo-inspired action RPG system, you’ll live or die by the strength of your own unique character build (or one you found in a PoE 2 build guide online). You’ll choose everything from your character’s class, to the equipment they use, to the skills they learn, to passive buffs that affect all of the above. It can get complicated, but only because of how deep it goes, how customizable every aspect of your character is.

https://screenrant.com/how-to-ascend-path-of-exile-2/