I got ending 1/5 first lmao, I figured out the location to go to but I couldn't quite find what I needed to find there! But I got all of the endings eventually and I really enjoyed them. :) I used the walkthrough for ending 3/5 but I was able to get all of the others on my own.
Oh wow, really happy you liked it enough to get all endings! 3 does seem to be a tricky one, not many folk have gotten it! Next time I include an ending like that I might make it a little less specific to find.