First locker you will find is next to the room full of body bags.


Why?
Because they didn't follow this guide.
Not following this guide will get you one.

You can't get into every locker.


Why?
Because those without green light are used by someone who is following this guide.
or it's broken.

Getting inside is simple.


Approach the locker and hold E.



Now disconnect your keyboard from computer so you wouldn't accidentally leave your locker.



That's how you survive, stay safe and have good health until rescue arrives.

Spoiler alert.
There is no rescue.
Following this guide will not get you to the end game.
Why?
Because for some reason you can’t move around with locker.