What a fantastic entry! It feels complete and well thought out, with great unique visuals and an unexpected twist.
I liked it a lot, the card system was fun even if all the cards had the same traits and enhancements, I did find it got easier as it went on since about half my cards had the chance to grow a lot in power. My only other observations are that there could be some benefot to being able to advance the dialogue with a click instead of waiting for it to go at regular speed every time, sometimes the healing wouldn't work and it wasn't explained why (I assume 9 is the highest health you can have?), and that there were empty textboxes to click through which had me waiting until I realized I had to click again, hehe.
Other than those minor things, it was awesome! The art on the cards was great, the atmosphere was on point, the dialogue noises were fun, and I loved how the number of encounters was signaled with the lights on the back, very nice diegetic UI touch there. I'm quite amazed that this was made in a single month, awesome work!