Has anyone gained all the possible polychromes they could from Bizarre Brigade?

I'm going to be honest; I'm a bum at this arcade game. With the polychromes tracker I am constantly humiliated of a potential 900 polychromes I could get from Bizarre Brigade. I have only defeated the hardest level with the cabbage. Is this minigame really hard or am I trash? Are there any good tips to beat the hardest level with every character?