Cool concept, love the art and music!
I had some difficulty understanding how to play most strategically because I wasn't sure how my deck worked. Do I use the same deck every battle or are my cards consumed when I use them?
I also encountered a bug where I spawned on a brown screen after restarting or killing the fox creature. Unfortunately that's as far as I could get. It looks like a great start, nice work! Sorry if I missed important parts of it :)