How to get third subclass Sunbreaker, Nightstalker, and unlock every new subclass is explained here.

You are limited to the game's newest subclasses for story reasons.If you are wondering when you can get your hands on your beloved Nightstalker again or start throwing Hammers of Sol, here is when and how.

Class Relics are items that will start dropping when you reach certain levels.Many people on this thread report receiving their first at a level seven, and it looks like the second comes at level 14 or 15.The drop rate for the Relics is high once you reach the level threshold, according to ShadowRock9.

Killing things is the next step.ShadowRock9 says this only speeds things up and that kills in PvE will raise the completion percentage.All you have to do is play the game.

A new mission will be unlocked once you hit 100%.It looks like this is the same for all subclasses, and it involves wasting a lot of enemies with your new Super, which you can fast-charge by passing through pools of Light.You need to complete this mission to get your new subclass.

Gunslingers first, Arcstriders second, and Nightstalkers last.The first ones to be unlocked are the strikers, followed by the Sunbreakers.Warlocks start as Dawnblades and end as Stormcallers.