Wow, that escalated quickly! Haha! I can see this being such a simple and competitive game. I hope you're able to put in that leaderboard in the future! It would be fun to see what everyone else's scores are.
My main feedback would be the hitbox/collision box for the rabbit character. There would be a few times I thought the rabbit's character's ears would collect the biscuit, because the biscuit and the ears visually touched, but ended up passing right by me. Other than that, maybe add an extra variable, whether it be a power-up, item to slow-down, or different enemies in different sizes or movement on screen.
Overall, great work considering you made everything from scratch in one week! (and sitting on the floor.. please get your desk set up for your back's sake haha) :)