User blog comment:StoryGirl83/Nerve Yield for Diamond Choices in "It Lives Beneath"/@comment-36039436-20190208173452/@comment-3452092-20190208194555

Your welcome. That is exactly why I created it. I do need to update it more and I should note that it has been proven possible for everyone to survive without spending diamonds if you follow the guide very carefully, although the only person I know of to do that did have one of the characters leave. I think, based off that playthrough (not mine, I spent tons on diamond items and some scenes), if you get one high diamond item with Parker and one with Tom (these seem to be the low ones), you should be able to get through with not only everyone surviving, but keeping everyone in town.

I will try and update it some more soon, since I only have it up to date through chapter 12 at the moment. Once it is completely up to date, I will be able to give a more complete suggestion on what the best items to get for nerve yield are.

The lore documents, as I state at the beginning, are more for flavor than anything else. They affect the story some, but not nerve yield, so enjoy them once you have them, but if your priority is protecting everyone, they should wait until another playthrough as you have planned.