pf2e.fyi
From Pathfinder Guns & Gears, which isn't enabled.

Advanced Breakthrough

FEAT 6
ARCHETYPE
Archetype Inventor
Prerequisites Basic Breakthrough

You gain one inventor feat. For the purpose of meeting its prerequisites, your inventor 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 inventor feat.
Pathfinder Guns & GearsORC