This is really unique and so well done. Feels almost complete. I ended up getting frozen somehow where I couldn't move. I don't know if maybe I had "died" at that point, even though I'd lost all my HP long ago. All I could do was get on and off the Osmu. Found another bug where the Osmu can slide into the cave and then you can't get on it without leaving the cave and calling it. Still, there's a lot going on here so a few things here and there are inevitable. Really, really good job!