I was so confused at first, then it accidently unlocked. It seems like the hour moving clockwise, and the minute moving counterclockwise worked best...? My high score is 6 though. I love the concept and the card art!
I tend to use that method when I play, too! Remember that (like a real clock), the hour hand does not need to be precisely on the number for it to count towards an unlock; you'll need to be more precise with the minute hand. Use this info to your advantage to see if you set up scores more quickly! I'm really glad you like it so far!