Yo, I didn't know you took part in the jam, Failboat! Thats kinda cool, both for you and your team! The art on this game is awesome, I'm a huge fan of the style! I will say, I found it hard to hit the boss, maybe widening his hitbox, or adding a bit more control over the aim could help with that? Also, the explosion effects when the boss did appear often obscured my balls and made me lose them since I couldn't track where they were going to be. Other than that, a really cool idea executed really well!
(Also, if I had a nickel for every game I played this jam that had really nice artwork and that you had to fight a giant rat boss, I'd have two nickels. Which isn't a lot, but its weird that its happened twice)