Perk

A Perk provides a generic improvement to your character.

Level Perks can improve your Stats, Skills, overall Health, and more. You can choose 1 Level Perk at each Level (including at Level 1.)

Archetype Perks improve capabilities in a more niche way that complements each Archetype. Whenever you add a Level to one of your Archetypes, you can choose 1 Archetype Perk for the Archetype you chose (including any of the initial Archetype Levels chosen at Level 1.) For example, if you add a Level to the Mage Archetype, yo may then choose a Mage Perk.

Fighter Perks, Rogue Perks, and Mage Perks are all Archetype Perks.

A Basic Perk has no restrictions on when it can be taken. An Advanced Perk is a stronger perk that is unavailable to you until you have taken 5 Basic Perks from the same group of perks. For example, you cannot take an Advanced Fighter Perk until you have taken 5 Basic Fighter Perks.

For a list of all the Perks, see the Perk List.
For more on how Perks work, see chapter 2.9. Tracker Boxes.