Good game, but assuming you're taking feedback in the comments, I'll leave some here.
1. There needs to be a way to skip card rewards, etc. in this game. I can't ever beat the first level so far because you're forced to take every card offered to you, and this was leading to me taking unavoidable damage because the deck becomes too fat after 5ish battles with no way to cut cards out of it, and unable to draw my defense cards.
What starts as a 5 card deck becomes 15+ cards about halfway through the game and unless I want to play a "deck bloater" game (or have the game make my deck for me), its something I would drop after maybe 5ish battles when the decks become not sync anymore due to being filled with whatever junk gets offered to you or too many copies of the same card (a single shield becomes useless when the deck is 20+ cards when you get to the boss of that level).
2. There needs to be a way to check the draw and discard piles. I found some card that lets you take any draw from the draw pile, but I feel like sometimes its a wasted play when I can't check the draw pile to see if there's any card in it that I want. It similar to the discard pile if there is a card that lets you find something in it.