Neat game with some good card variation. My main issue is that it feels nearly impossible to win in some situations, I made it to the stage with two slimes and the rock enemy and the rock built up enough strength to easily take me out in the end. I think some balancing could be done in that regard, but getting an equal balance between player and enemy strength in these kinds of games is not an easy task, so I commend you on your ambition to recreate this genre in 48 hours! I also did have the issue with the cards' hitboxes being shifted over a bit on the card select screen, but the card highlights did help me out when picking cards. I really like the concept, I think the main improvement to make is game balancing, but overall it's a neat game. Nice work!