Hi! Thanks for the feedback. Squiddy's sound is actually an Easter egg, which is why we didn't include an in-game option to turn it off but you're right, we should add a way to disable it! As for the countdown: it isn't a standard game mechanic rather, each level you clear (from 3 down to 0) represents a descent into The Abiss.
Thanks again for the feedback; we'll look into fixing the Easter egg issue. If you feel like it, after the Jam we'd love for you to give the game another try with the fixes in place❤️!