Mole

Mole sets targets. He digs for reach target. Mole starts on bound between sun and ground, he starts searching of his fate. He sets targets and digs deeper into the ground. This is the life-long way. And after some time in darkness of ways and nothing happenings you try to find back way. You set new targets and dig new tunnels in the ground of your mind.

Game has not help and tutorials, as well as your life.