Most of that was already documented over at f95zone, sadly the thread been taken down, alongside tons of other ones, that are even remotely loli related around last new year, so would certainly be nice to see a new version here with everything.
For the Spirit ruins trimmer, you need to take the very right most spirit on the last map before the tower (same map as featured in my last post helping about the skull jar, if you need a picture reference). After that there is a bit of a boss fight, that can be hard to figure out for a lot of people, but the trick being you need to know Eliza down with one of your monsters tentacle "attacks".
While it is a long time since I played the game last as well, I have played through it multiple times, as well as messed around a lot in the RPGM engine editor for it, and still have it setup to open it that way, so do say, if there are other specific ones you have issues with, there is a good chance I can find them, though some things are harder to find than others due to how the engine works really (most notably there being litterally no search feature what so ever...)