I need help on the monster arena. 2 things right off the bat. How do you beat earth eater and catastrophe? I found some lame advice on websites for beating earth eater. It will say something like Summon magus sister and have them attack and knock him back and use delta attack. This advice is terrible..1. Magus sisters like taking breaks2. If ur ambushed, most likely ur team will die. And for catastrophe the toxice gas always kills me. I'll post more things when I need help with more..