Thanks for playing and for the feedback!
That's a nasty bug with the joker, I must make it so the Automon doll doesn't trigger while there's a tutorial pop-up or settings/other overlays
I get a symbol from Invaders quite frequently, which I think is fine since you also get some money back. The other things dropped by the enemies are power-ups. You can get speed, faster fire rate or +1 health
I might need to add more things to the game that make multi-color builds viable, but I'm not quite sure how, without redesigning the color system entirely. Or I could just make monocolor builds more punishable
Will fix the issues with DJ, Pickpocket and Syringe, thanks