Yeah, we were kind of trying to incentivize coming up with a strategy for choosing cards by making the boss HP much higher. We may have fumbled with the probabilities of the card drops by a bit so Aces were a tad too rare...
The art came from artists here on itch.io, you should definitely check them out using the links in our game page description. We wanted to add more visual feedback and effects but sadly we overestimated our abilities to pull them off given this was our first game jam XD
And yes, I believe we messed up the resolution scaling. Not sure how to know if it works since it worked on our computers so we'll definitely keep it in mind in our next jam.
Hey, thanks for the feedback though! We really appreciate it :D