I hope you will implement all the features you wanted later!
I found the right angle to slow it down, but I only needed to sit in a corner and shoot in the middle of the screen to win, so at the moment, it is not very hard to win :(
I'll definitely try and implement some of the features I had in mind: I'm not gonna spoil too much, but one would force the player to move and not just stand still and shoot, while the other would reward controlling the ball.