Really cool concept and readable visuals. Once you start getting more and more helpers it really becomes a fun chaotic mess
Perhaps a visual or sound indicator for when your anger becomes high to communicate why your helpers suddenly start shooting you would be good. It's not entirely clear what is happening the first time it happens. Maybe you could also experiment with bigger and slower bullets to give the game more of a bullet hell feeling (similar to Enter the Gungeon).
With more weapons and power-ups, I could see this being really fun