It is a little harder than you think. I had an extremely short lived job making guides for brady games back in the late 90s.

Getting far enough into a game to understand what is and is not needed, then writing a guide to get to X area, or to find item Y is not that tough. It's just pen and paper, or have an open txt file and write down what you'll need to do every so often.

But it means putting about 15 hours into a game at the very least. And you'd have to do that at least 3 or 4 times on other games. If you work an 8 hour shift, that's 2 days on one game. If they want your stuff by friday at closing time, that's only enough to really sink into about 3 games at best.

So it is a bit of a high number, considering the staff left there to do them.

Not they deserve any of your sympathy for any of the above. They're in their exact position, because they put themselves there.