Thanks for your feedback! I agree that the game needs an in-game tutorial to explain the necessary mechanics. That’s the main difficulty, but once it is understood it is quite easy to win.
Sorry for that bug, I found it as well and will be fixing it in a final release with many improvements and added sound. Although, reducing the options would not have given me any extra time at all c’: The game is indeed a little overscoped for a 4-day jam, it’s been years since I’ve made a game, I forgot how time-consuming it is. Thanks for playing, I hope you’ll check out the final version!