I enjoyed playing this game! I think the second level was the hardest to do because I did not know how to solve it and there were no hints, good thing I read through the comments and found the way to solve it. And during the treasure level I kept waiting or the treasure to show up, it took me a few moments to realize the treasure was the stuff in general xD Also, I believe a more summery type of music would have enhanced the beach feel even more. But you also mentioned the time constraints, so I feel you on this one :'D
Other than that the mini-games were fun, and you played well into the limitations, even using the buttons!
Great job!