A little feedback:
The direction the ball travels after it hits the paddle doesn't make sense. I feel like it should hit the paddle bounce off at an angle based on the orientation of the paddle(reflect velocity about the normal of paddle surface). It seems like you are just reversing the x and y velocities based on which side of the paddle is hit. This leads to having very little control of the direction the ball goes after hitting the paddle not to mention it being exceptionally unrealistic. Maybe this was intentional but it makes the game feel like I am not in control of how the game plays out.
There is a typo in the instructions that fade the "O" in "Counter" is capitalized.
It would be nice to have wasd or mouse controls.
Otherwise it is fun and impressive for being made in only 12 hours.