Thanks for playing! To be honest, I'm not good at platformers either so playtesting this game was a nightmare for me. And I wanted to balance things out a bit more and make the game easier, but I really wanted to make sure that I would submit the game on time, so in the end I didn't do that.
Edit: And if I had more time, making the boss appear a bit better would probably be a higher priority for me anyways :D .