Alright. I've replayed the game. This time I could finish. I noticed some bugs like being hit without the enemy using a card, or the loose screen when won (maybe this is a feature XD). I recorded my new gameplay to catch anything wrong visually. It's a 3 min long gameplay. Good job!
Thanks for recording the gameplay! That's actually very helpful. I had no idea it looks so funky on a different aspect ratio. I'll have to look into fixing that. I might have forgotten to fix the random end screen issue... but it could be worse. There's a card that deals damage over time and one that causes self damage in exchange for extra armor. I probably should have added some more visual feedback for those. Your feedback has been greatly appreciated and most helpful!