When you reach Level 100 for the first time, the game can let you click on Prestige Button.

You lose your Stats, you get back to Level 1 and your get the “P1” affix.

You keep your equipment.

Now, you need to get 1,5x more experience to level up. But you get 2 Stats Points per Level.

You can reach another time Level 100, prestige, and get your “P2” affix.

Now, you need to get 2x more experience to level up. But you get 3 Stats Points per Level.

If you reach another last time Level 100, you can prestige, get your “PMax” affix and keep battling monsters. You not get back to Level 1 or lose your Stats. You don’t get experience anymore.

Tips : You can choose a different class when you prestige.

TLDR : Lvl1 (P0) → Lvl100 (P0) → PRESTIGE →
(1x experience needed / 1 pts per level)

Lvl1 (P1) → Lvl100 (P1) → PRESTIGE → (1,5x experience needed / 2 pts per level)

Lvl1 (P2) → Lvl100 (P3) → PRESTIGE → (2x experience needed / 3 pts per level)

Lvl100 (PMax)