Congratulations on finishing your game! This is really impressive considering you are just getting started in Unity. The animation on the butterfly and frog are especially nice. If you are going to continue to develop this game, I would suggest you think about the believability of some of the mechanics. How does a butterfly carry a huge rock? How is it possible to rewind holding something it didn't have during the rewound moments? I realize it's a video game, so real-world physics don't apply, but it would be cool to work out answers to those questions. Otherwise, you have created an enjoyable game and should be very proud of your achievement.