I like the art style a lot. The inversion of a classic game is a great premise.
Since the game is about timing, one needs to be able to build a sense and react to the antagonist's actions. The animation for hitting the center lane is very short (possibly less than average human reaction time). I like that the animations got faster as time went on, but then the center animation was impossible AFAICT.
This could be really nice with some polish around sound effects for miss/hit and a more game-like score display. It could be really fun to show the score as though the player was inside the screen for the game. Maybe show the score reversed like it was supposed to be viewed by the antagonist, but was backwards since we were inside the game.