I'm giving up on this game jam, so I'm posting here the game project and the graphics I made so far.
The idea was that a yeti had to find a new home because it's old one was too hot. It can blow cold air to freeze enemies, and the game was intended as a puzzle platformer. Heat sources would prevent enemies from freezing, and water would instantly freeze the yeti, resulting in a game over. I was playing with the idea of a kicking mechanic to move enemies, but stopped while refining it.
What it has so far is movement, the blowing cold air mechanic, heat sources, water with buoyancy, and a patrolling AI for the enemies.
If anyone is interested in picking this up, or using the graphics or any other part of it, feel free to do so.