I don't really like to critique passionate projects like that in wich developers put all their heart, but i think honesty is what authors need the most.
!SPOILERS AHEAD!
The begginig of the game was really inriguing. The suspence worked really nice! I got hooked up easily, i wanted to see what happens to Augustine and Winnie.
But i was dissapointed with an ending. That's really just my opinion, you can consider or it or not as you please. But for me the ending fell flat because it was very predictable.
I do understand that this game is about the value of frienship but the way it conveys it's message is poor. I don't think that just a final dialogue between two friends could repair a long flawed relationship.
Maybe you should have added more trials to solve. or maybe the last dialogue should have been more like a puzzle of sorts.
Also I'd like to see the monster closely. And maybe skinwalkers of those two. I think this would also add something nice to the atmosphere and message of a game.
P.S. Don't bother my mistakes, I'm not a native speaker.