A and D to move. SPACE to jump. J and L to punch left or right. K to do your special attack. Enemies will try to hit you with their baseball bat, you have to dodge and hit them back. You have 10 hp, and collecting an apple adds 2 (There is no max).
The movement may not be the best, but it's hard to make it better. As the title says, remix the project and add a gimmick or two! I left inside notes where you would put the gimmicks, or you can make flat out new sprites for a gimmick.