Hello, Sarah. Are you feeling well? Take a few steps for me.

WASD to move, not that it will do you any good.
Shift to run for your life.
Space to climb and reach things you shouldn't.
1 to use a glowstick and find What You Need.
2 to light a flare and ward off those you left behind.
LMB to take or play with things that don't belong to you.
RMB to drop your flare or glowstick. You can't pick it up. Don't even try.
E to throw a flare or glowstick. Hilarious.
M to find your way again, and mousewheel to see your map better.

Excellent. Now, there are a few tasks I need you to complete.

In this cozy little hospital are some remnants of its history. Everything from photos to newspaper clippings, etcetera. They're usually located in envelopes with glowing seals on them, but can also be found in any container you stick your grubby little sausages into. Use glowsticks to make those containers easier to see.

As you find them, and also as time goes by, the Fun Meter fills up. As it gets filled, the denizens of the hospital get braver, and try to play with you more often. Use a flare to be a bully and scare them off.

When you've found enough remnants (Don't worry, I'll tell you), they'll leave a special present for you in a special room. The room has glowing mazes all over the walls and floor. It'll even be marked on your map. If you still miss it, you must be blind. Or stupid. The present will help you move along to the next area. There are 10 sections of the hospital in all.

After having their fun in one area, they'll need a moment to rest before they play again. The next area will be somewhat less eventful, but you'll be free to hunt down as many dirty little secrets as you can find as you root through the garbage. Pig.

A few little pointers before you run off.

Unfortunately your new friends don't really understand the concept of "Too much", so they tend to... well let's just say they tend to play with you to death. If you really feel like you've gotten yourself into a pickle, just start running. They have trouble keeping up, but don't run yourself into a dead end. They'll be waiting when you turn around.

You move your head an awful lot when you run, did you know that? You look like a bobblehead. Or a chicken with a broken neck. If you start to get sick, just slow down.

You can't drop or put away your present once you get it, you ungrateful little witch.

If you hear something chasing you, don't stop moving. You can go anywhere, but if you stop moving or turn around, they can get you. You can see this demonstrated quite well once you get to the forest.