Very cute pixel art, loved the little touches like the ice bobbing up and down in the river, or switching the word "health" to "warmth". Made it feel very cozy. Controls were tight and responsive.
The snowballs did feel more like balls of yarn to me, and it got a bit repetitive trying to get to the boss without any progress indicator. Also any time there is WSAD as controls its nice to also have them on arrow keys.