Just read earlier pages, saw the alternate ending. That has me thinking even more than the original ending, when he curls up like the "mind-controlled" beings.
The part I can't reconcile in the game is when the water-witch girl drags you down and then you somehow can breath underwater now. Was she really trying to help and she gives you that "power" basically? I guess that's how I interpreted it.
Also, lots of you talking about the fire crate and sprinkler puzzle. The second I grabbed the crate and saw those pipes (didn't realize what they were at first), I started tossing it up and over then catching it to see if it would unlock an achievement or something. Little did I know that's the exact strategy I'd need when it was on fire..!