Wow this is so cool! I love a lot of the design decisions of this game, and the card track is especially cool. It's a really clever way of mitigating the luck and adding in some strategy while still making the game feel like a card game. I'm very eager to see where this project goes.
If I had to give a criticism, I'd say that the starting deck feels bland. You'll notice most other deckbuilders start you off with a couple of interesting cards right off the bat to keep the game interesting right from the start. The closest to that in this is the archer's 0 cost block card, but the other characters feel too generic at the start, and that's especially a problem given that you seem to get less cards in this than other games. I think it'd be cool to switch out a couple of the basic cards with more interesting cards, like putting a status condition or a push card in the base deck, for example.
I love the enemy design so far, too. The elites are super scary! And the boss is just stupid strong haha.