The responsiveness and tutorialness was lacking, it's completely my fault you came out feeling that way. I'll work on it when I complete it, thank you for trying it out!
You're actually the first person to report how many bosses you beat, so I'm happy to know that! Now that I'm aware the tutorial is lacking, I've been considering the game's been too complicated to engage with and actually beat any of the bosses, so getting a number on how far someone who was lost could get is really good info.
Do you recall which two ones you beat (their looks, if you hadn't unlocked their names yet)?