Hey, it's a great start for some kind of mini game.
But still I think you should polish a movement a bit, it seems a bit junky for me. Also, those giant snowballs ain't much a danger for a player as you can easily climb on them.
Aesthetics is cute and I liked assets combination, good job on this!
By the way, it would be better to change text to a vector based as it blurry a bit. If you are using Unity just use Text Mesh Pro instead of a basic Text component and UI will look good!
Anyways, keep it up, guys! If this is your first game - take my appreciation, because it's much better than my first game :P