Started out not expecting much, quickly grew to appreciate enemy variety, challenging card building with increasing difficulty, detail to distinct card visuals and even chibi progression, a story that does get involved with gameplay though fights. Engaging progression premise with lots of replayability in future (though most runs were needed for me to figure out which defensive cards fit better a drawing engine deck against later enemies).
I cannot stress enough the simplicity of most of the card descriptions and how fluid the card gameplay is. (some keywords like reflexes for example not very clear if it adds block before or after enemy attack until you try it.)
Wouldn't mind couple more gameplay features (that don't disrupt fluidity of gameplay) but just expanding in the direction from what's already in place seems guaranteed to be fun.