Great job! The game lacks some polish but has a lot of content and is fun to play.
I liked that the levels are quite different from each other and there even is a boss battle! Final boss is great: so many different moves, and he puts your skills to the test. When Santa got control of forces of gravity, the game became very chaotic but I managed to save the Christmas.
I think the platforming controls could be improved on: they feel a bit floaty. But it's still a very enjoyable game!
Good luck with your future projects!