I am curious about how you implemented the behavior state machine in Unity, can you share some info?
Is it a Unity package? Is it just handwritten code?
Viewing post in Week 4 - Boss Battle Design comments
I used a framework developed by Diogo Mendonça, which was done for the earlier DDJ course. It's available here on GitHub. The state machine has to be built entirely on code, but it's just a matter of "converting" a diagram into a chain of dependencies and connections.