Thank you so much for the detailed and constructive feedback! And I'm glad you enjoyed the game :3
We had most of the same points on our radar, we just didn't have the time to add them. Basic score UI and high score tracking, along with some sort of minimum duckling requirement (half?) was was one of the top priorities we didn't manage, along with simply adding more levels. We'd have liked a splashing sound effect for movement as well, and a bump sound when you try to move but can't. We hadn't suggested a pushing sound though, good idea! And the lack of victory screen is an omission for sure, returning to the main menu was the ultra quick solution that at least made the game presentable haha