The mechanic is clean and tight. Very nice jam game design for 1 day.
It would have been fun to see the idea expanded on a little further. How would the game get more difficult? What would other level layouts have been like?
The graphics are very much programmer graphics. It would have been fun to have characters with a little more visible personality, or maybe they are on a cake, and trying to eat candies. A few simple well-chosen sprites could give a lot more flavor and inspire player imagination.
The Yeti-chasing sound hurts my ears.