Arrow Shooting Map

I decided I should finally get to playing with command blocks and their variety of commands, and by deciding that I started making a target and a score multiplier on redstone test world. I decided it was a good idea and switched it to its own map, so that I can possibly post it and update it more once it is done. I hope you enjoy my creation. I do believe i can do this with multiplayer, but I suggest pressing reset button before you shoot with the other person, so that you can keep score better.