Use the arrow keys to move. Pass all the levels. Fight Basketball carefully so you don’t get game over. When Basketball's health is half, he will start doing the bulls eye bash. If you get hit, it will do a lot of damage. Press space to heal yourself. You can only heal 3 times.
I increased Basketball’s health to 500 and made some fixes and made the obstacles harder to avoid. Also Basketball can get hit by the falling spikes.