How to complete boss rush

Boss rush is very hard to complete. If you die, all the bosses come back to life. This is how a ten-year-old girl completes it.

Get ALL the items, including the heart containers. Peashooter and Boomerang are optional. When you get to Super Shellbreaker, gravity jump to the ceiling and shoot him from there. Eat the grass when you have killed him. For Vis Vires, stay between his legs and do not jump. When he is dead, eat the grass. For Time Cube, it is the same as in normal snailiad. When he dies, eat the grass. For su snail, try to not get hit. It is easier for Giga snail. Jump to the opposite side and shoot him. When he spirals, stay between the peas.