Well done! Decent number of levels. Some notes: the gold coin collection collision box persists after the coin is collected, so it plays the sound whenever you pass the empty space. Colliding with enemies or spikes doesn't seem to do anything, so no threat of damage. Art assets are good; I especially like the player and Mr. Krampus. The collision works well for the platforms and the moving platforms. I got a score of 99; is that the max?
Solid attempt!