Very good game.
The only problem now is that: It's too easy to win if you don't play with fire intentionally; however, once you play a little bit of fire, it has surging negative effects and is impossible to win.
The final boss is broken with 100 damage and 100 HP, but could be killed by 2 hits (67+33) without any weapons in the first try, which makes the design a joke. It is not even harder than several monsters appear at the same time, which catch you off guard. Since you know you are 100% winable or 100% unwinable when you see the boss, it is not special anymore. You only got a hopeless defeat or a complete victory. I am not very sure whether the design of 100 damage is good or bad, but I think the difficulty of the final boss could be adjusted based on the player's strength. Like, the final boss could turn over the enemy card, or the final boss could also turn down the card itself, or even he could use cards in his venue.
Nice game. Awesome game. Make it much longer and larger. Only 30 floors are not enough for me. Looking forward to your game.