I beat this on reaper. Took me 8 days. Real days. I played on a laptop and closed the lid to "pause" the clock. I made a map of the whole world on grid paper (still have it) and was in the process of mapping out all the trees to locate the treasure when I miraculously found the treasure spot. I was in the process of figuring out how to film the video when I "paused" the game for lunch. but, I didnt realize that if you have the laptop plugged in, by default the screen goes dark but the laptop doesn't "pause" so I died. My heart broke. But this game is forever in my soul. I did the run at least a year~ ago. If you're interested, I can try to get together all the materials I still have for a video.
I'm actually mostly sad cause I wanted to "finish" the map with full details. Like a "there and back again" map of my own personal lonely mountain.
I used rafts to build bridges between islands. And I built turnip farms on every corner of every island so that every place I went I had fresh turnips. I then made turnip trails connecting my "ports" and the bridges across waters was to know where I was as I explored. Truly the most unique and difficult hard mode I've ever had the honor of experiencing.
Thank you for making this game, it's an inspiration truly.