Thanks for playing and this big amount of feedback. I can tell someone had almost like 300 biscuits by only beating enemies and 1 reward (But somehow the game glitched and gave him better cards). I made the game bit too easy for newcomers mostly for this jam, so players didn't have to spend hours on the game.
Yea there isn't much sfx cause we didn't had enough time to implement it (It's in our folders just waiting to be used).