Aww, this game's aesthetic caught my eye immediately, the papercraft is adorable! I wish the game's cover art reflected the actual game style, but it is still very striking.
Getting thrown in with no tutorial was a bit of a jarring start, but the game itself is pretty easy to navigate by just learning on the go. Super fun concept for deck building plus tower defense! The UI could definitely be utilized to better explain the cards, actions taken and encourage players towards a strategy. The enemy AI's ability to re-route is not something I had seen before and I really liked that.
Factor in some more enemy and card elements and I think this game could scale in a super interesting way! It's exactly the type of game I could see myself playing on a Nintendo DS. Wishlisted! Best of luck on your development.
VOD (from 01:51:57 to 02:08:15)
https://www.twitch.tv/videos/2561690458