pf2e.fyi
From Pathfinder Battlecry!, which isn't enabled.

Advanced Defender

FEAT 6
ARCHETYPE
Archetype Guardian
Prerequisites Basic Defender

You gain one guardian feat. For the purpose of meeting its prerequisites, your guardian level is equal to half your character level.

Special You can select this feat more than once. Each time you select it, you gain another guardian feat.
Pathfinder Battlecry!ORC