How it works
Visit a Class Master NPC.
Meet the level requirement and already belong to the appropriate class.
Provide the required items.
Use the same process to level up each skill.

Developer announcements, patch notes and gaming coverage from across the GaugeDB catalogue.
Source: Steam Community (opens in a new tab)
How it works
Visit a Class Master NPC.
Meet the level requirement and already belong to the appropriate class.
Provide the required items.
Use the same process to level up each skill.
