I liked the art style, and the gameplay was fun overall. I'm looking forward to the full release to see what kind of endgame deck I can build.
The learning curve felt pretty smooth. The descriptions were clear enough, and the combat encounters introduced new things at a good pace. I could clearly see how different enemies pushed me toward different strategies.
The binding system feels quite strong. If the full release uses something similar to Slay the Spire's three-stage structure, I'm a little worried it might become too easy to bind most of the deck into very strong combinations. (Since card deletion feels frequent now) It may just be something to watch as the full progression gets longer.
For QoL, I'd also like to see some hotkeys. I'm used to playing this kind of game with a keyboard, so having shortcuts for common actions would make it more comfortable for me.