Out of Range

A submission of campfire!!

Stuck in an elevator. From the subway, now 100 feet underground. Fallen Out Of Range.
To proceed further, you must acquire energy points to reach the next level, one by one, until you're back on Platform 0—Ground Floor.
As the time goes by, will you survive the darkness or be buried underground?

Controls:

WASD keys or ARROW keys to move, SPACE to jump