Hi! Thanks for playing and for the kind words!!!
Stoff, our artist, doesn't generally share the game jam's art online, so we deliberately left it out of the source files, sorry! HOWEVER, he does often make specific packages / asset sets that are free to download from his itch page, unfortunately, not these assets!
As for some of the scripts, I used a bought package called Behavior Tree Designer, and while I did code all of the actual behaviors myself, they wouldn't work without the behavior designer which actually put everything (enemy behavior that is) together. So yea, due to legal reasons I had to leave out the behavior tree stuff, sorry (can't just upload a paid package that's still actively being updated on the unity asset store @ an open source :D)