Reign of the Undead - Revolution

Hi there, I just finished a game on harbor about 5-10 minutes ago. Joined at the start and lasted 20 rounds without buying anything. I'm not sure what wrong but the Scrimper challenge didn't complete for me? I'm sure I didn't purchase anything from shop or weapons. I am on Premium so not sure if that affects this one?

i guess you changed class

Ah thank you, I didn't release that changing classes would affect the round.