The following page of the AC Valhalla guide contains information related to character development and skill trees. You will also learn about the three archetypes - Warrior, Assassin and Hunter.
While playing, you collect experience that will allow you to gain new levels. Along with this, you will get the ability to unlock new skills or improve your current skills. The developers made sure to add as many abilities as possible.
There is a total of three trees based on the warrior, assassin and hunter archetypes. Each has a different set of active and passive abilities. This will allow you to develop the character in different directions. There is a chance that our character's development will affect the way the story progresses.