Mining in the frozen world

In a freezing 2D side-view world, the protagonist's family is on the brink of death due to the lack of heat. The only solution: build a furnace. With a pickaxe in one hand and a sword in the other, the player sets out. However, ghostly creatures roam the surface, pushing the player to dig underground in search of coal, iron, and a rare mineral required to construct a working furnace. The deeper you go, the more dangerous the caves become — deadly falls and hostile lifeforms await.