Well I made it through only to realize it was a waste of time. After the initial run, I dont think I'd do it 100 percent. The 7 star rank 3 gem was the only one it didn't need. I got two selector crystals to match the Gem and got terrible Champs. You have to 100 percent complete it to get the title. The cats needed to get the title without 100 percent, isn't in the game yet.