Two People worked on our game so we'll both leave our impressions.
Neri:
Nice looking game, some transitions optimizations needed as passing though stages froze for me for a bit.
In the duck stage I would have really enjoyed if the ducks would auto pickup when riding the boat over them.
There is a wall that you can pass through in the final room with the Quack duck ;) and you can't pickup the red can when standing over it.
Fits the theme.
MarioMario7:
I liked the concept and the puzzles themselves. I think it fits the theme nicely, however I can't help but point out a couple of issues, I won't repeat what my colleague said just now, but I'll add that the boat controls felt clunk and not intuitive but I do like the idea of rowing each paddle independently (kinda like in minecraft :D )