After reading the instructions I understood the consept what this game might be in the future. There could be different kind of cards/enemies to spawn for our knight. Also the healt card would be nice to be randomised too in between picking cards to spawn. Maybe you could add double reward/growth in strenght/skills for challenging two enemies or more.
Otherwise the game art looks nice. Smooth animations. Waiting the game idea to grow to full game. Good Job!