I don't think there's a way to validate if certain cards in the DLC decks are in effect. Is there any way that we can combat this? It seems too easy to fake a record without the action cards

I didn't realize they weren't shown in the pause menu! We'll have to require visual verification from the game select menu in order to allow it! I will update the leader boards to reflect that and add a category for "Theme Cards Required".

Yeah, I realized that when I was going for the just dance ones. The action cards are destroying my life

Yeah, they're rough! Thanks for pointing it out! Best of luck with your continued run efforts!