Extremely addictive! I especially loved the bit with the frog.
I played the demo yesterday and immediately bought the full version on steam and played it all the way through!
There's a couple oddities to the combat (like how shields are better than weapons) but once you wrap your head around it, it's quite fun. A bit more of a puzzle than Slay the Spire.
There's one small bug where the upgrade card can accidentally be dragged onto itself, and I didn't see a way to play as the witch, but this is truly an incredible game, and a very impressive project, especially for just one person!
5/5 don't miss out!