I think the order in which you do the endings will substantially influence your enjoyment of the game, tho. I think it's meant to be "read" in order from least to most revealing. I'd recommend them in this order (there's minimum spoilers but they do give room numbers and ending name):Spoiler
Nobody needs to worry about that, because the only way to get the True ending is to get the Safe ending first. The reveal as to WHY you need to do that... is extremely cool.