For the first boss in the game have lots of green shells and bro flowers. When you see the boss dont attack the actual boss attack the two guys on the side but dont bress the button right before you attack the enemy. When the two guys on the side have mushrooms with them attack them. (Note:if they have just red mushrooms instead of gray mushrooms dont attack them if they have just grey mushroom attack them if they have 1 red mushroom and 1 gray mushroom attack the one with the red mushroom first). after he gets sick use the green shells and bro flowers. You should kill him pretty soon YAY!!!!!!!!!!!!!!!!