I enjoyed most of it. I'm not really reviewing the fact that the game breaks a bit towards the end because it's a prototype/game jam game; things like that just need some polishing, maybe.

I dropped 1 star off because I'm not a fan of the fact that the paddle speed has to be bought. I think the game already has enough going on, and it was just annoying for me at the start that the paddle wasn't where I wanted it to be; the ball is already zooming around half the time.

That could just be a personal preference though.