Okay, I did it now. Still, I kinda gave up whenever I missed one card, because it felt like I would not be able to win anymore. Great game, the symbols will probably float around in my head for a few weeks.
Thank you for the feedback and for playing our game so many times!
We didn't test it with other people, so your petition is completely logical. Adding two difficulties seems a good idea, so after the jam's results (I don't think we can change it before) we'll update it. Again, thanks for letting a comment!