I think one of the most fun parts of stories like this is taking stabs at where things are going. It can be really satisfying to guess what's coming, but equally as satisfying to laugh at how off you were. So here's a few things I've observed and some guesses as well. Up to this point I've seen Knife, Axe, and Sub endings.
- Really don't trust Ace. There was a line in the Cabin where he touched Junpei and then Junpei went blank or something for a little while. Possibly used the sedative on him? From the knife/axe endings, I know that Ace goes to the cabin where he sees the dead captain with the 0 bracelet. In knife, we see dead Lotus with no bracelet. 1+8+0 = 9. In the axe ending, before Clover goes berserk, we see Ace leading Lotus off away from the other members of the group, presumably to kill her and take her bracelet. In the sub ending, every damn one is dead, though Junpei never investigates the bodies. My guess is that Ace killed everyone and then wiped their blood on himself and posed with the other corpses.
-Ace and Santa mention starting off in numbered rooms. Which? Why do they never bring this up later?
-Who killed the Captain? My guess is whoever started in that room.
-Seems pretty apparent that the coffin in the little altar area houses that frozen mummy lady. There's that "All ICE" binder found in the cabin, and the book is full of hieroglyphics.
-Santa and his sister were probably prisoners of that Pharmaceutical company that Seven was investigating.
-I have no idea who Zero is or what the hell his plan was. I hope it's not terrible like Saw, though.
-Why kill Snake? Not really sure here, but my guess is that it has something to do with his heightened senses. Maybe he overhears something fishy or is able to recognize a smell on someone that is something that they wished to hide.
-I have a lot of little ideas about where things are going, but the overall plot is still a pretty big mystery to me. I'll hopefully have the game finished in another day or two. I must confess, I was down on the game for about the first hour. A lot of the narration bits are very poorly written. Really feels like intro to fiction writing material. That could just be a poor translation or a commitment to the original text. But I'm really loving how these mysteries just keep compounding.