I think the idea of the card game was nice, but the minigame of bullets, i think we need more info to know what to do, what happens if you dodge all the balls or you hit a lot of them?
I do admit that I spent most of the time working on the battle system and card art (Ruen's Kindness taking the longest at 5 hours total ) rather than polish.
A tutorial was excluded, but I plan on adding one later on.