Good job on your first game!
There is currently not much to it mechanically, but I think you got a great base. It reminds me a lot of Hey Pikachu on the N64 where you would direct another creature to do things you wanted it to, but in this case only movement is available. I'm sure you can add something like the duck picking up stuff and putting it somewhere + a score and that'd be a fun game :)
PS: Amazing job on the water sound, pretty accurate