Fantastic presentation and some really nice touches, like the music lowering in volume when you're in defence mode. I liked that the mechanics promoted you to do quick, short attacks against the enemy. I wasn't able to beat the boss after 3 attempts, and I agree with another commenter about there being a checkpoint before the boss. I also think that if you had gone further with the theme, with the attack ball tethered to the defenceless ball, there would have been even more risk / reward. Great submission!