Love the game so far, unique art style, fun gameplay. I like blackjack and it evokes that feeling well. I like the upgrade/symbol system and progression with level mechanics.
One thing that feels off to me is The Sword feels very overtuned. Higher max than some other elites let him overcome even perfect hands, multiple +2, sometimes even +4 damage cards, and if it perfects or you bust even once it can one shot you with a good hand. More than that, it seems like it has a lot of low value cards that let it very often hit higher hand values without busting at all, which feels very annoying.
Additionally, the dangerous card upgrade never seems to give me an option to upgrade anything when I pick it. Unsure if this is a bug or if I have no upgrades possible.