While the Rogue might not be the most popular class in Diablo 4, it certainly is among the strongest, especially during the main story. Rogues have the ability to deal thousands of damage points in one fell swoop and move around the map with lightning speed. Though the Rogues tend to have lower health, their added movement speed and evade skills allow them to get out of trouble much easier than other classes.
However, if you want to become a true Rogue in Diablo 4, then you need to start and finish the class’ specific quest.
Each class in Diablo 4 has its own questline that unlocks the special ability for the class. When Sorcerers finish their class-specific quest, for example, the Enchantment slots open up for them. This can completely change the tide of a build in Diablo 4, and the same can be said for Rogues with their specializations tab.
In order to gain access to the Rogue’s specializations, players need to complete their class quest.
Starting the Rogue quest in Diablo 4
When you reach level 15 as a Rogue, you will be able to start the “True Potential” quest. This is a Priority Quest and you can find the marker for it on your map as soon as you reach level 15.

True Potential is started in Fractured Peaks, specifically in the town of Menestad. This is the northernmost Waypoint in Fractured Peaks, and in the town, you can find an NPC named Leyrana. You need to speak to her to start the True Potential quest.
Leyrana will send you on a series of tasks that involves traversing the map, heading into a dungeon, and defeating enemies and a boss. After all of it is done, you will complete the quest and unlock the Bakira’s Sting Dagger along with the specializations for the Rogue class in Diablo 4.