Talk:Past Challenge Characters and Requirements/@comment-2601:C8:380:B700:5083:7976:AE53:C6A1-20200109014549/@comment-165.91.13.46-20200116004952

You can just buy through those certain levels. If course it's not ideal because you are wasting credits when challenges should technically be free, but it's cheaper than buying a repeat of a character so I think it's worth it. Especially for some of the stronger characters like the upcoming Earth 2 Solomon Grundy and Animated Batman Beyond (even though they have silver cards max)