Board Thread:Questions and Answers/@comment-37067802-20181001074912/@comment-32923490-20181002035314

What do you mean by medals?

If you're refering to the Bronze, Sliver, and Gold "Dragon Ball" like icons, then they are the treasures you can randomly get in EoC and ItF. Collect a set amount, and you'll achieve some boosts that will help you immensly.

If you mean about the actual medals, then they are for the Zombie Outbreak stages, which will occur after you beat EoC