Use your mouse to move your batter around (the one on the right). Space to use your bat. Bot is already set on the easiest mode. Use numbers 1-5 to change the bot difficulty, 1 being the easiest and 5 being the hardest. R to clone the ball (up to 3 times as long as you clone it before clone you clone assistive bat). E to summon your assistive bat and Q to clone it. F to turn all of your bats into double bats. 6 to show the ball speed (debug). There's no limit to how far you can cross the line (because I'll let people decide themselves). You win if the ball reaches the left side of the screen and lose if it reaches the right.
Everything made by me or sourced from the scratch sprite library. (The batter and playing field are edited sprites/backgrounds from the scratch library). Make sure to push your bat on the ball long enough for it to move away. I tried. But couldn't be bothered.