On "Zero Escape: Virtue's Last Reward"

I'm going to try to post what I learn in each room/route. I want to do it as I do each playthough so my experience of it won't be tainted by memory of other rooms. I'll probably do this in point form, and continue it in the Comments. One person on Twitter mentioned keeping track of everything in Excel XD My memory may be incorrect in some places--I've not been writing things down.

☆★☆★This will be full of spoilers★☆★☆

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I've only 'finished' one playthrough, and I didn't even get to finish it because the last bit requires something from another route.

( My 1ST Route )