By bloody orb, do you mean the one on the right side of the screen, below the clock? That represents your alignment. 50 is neutral, and increases in number as the MC gets more corrupted. So far as I know, there is not yet any reason to avoid getting corrupted as much as possible. Perhaps in Gwen's next update, when her sister joins the world, we'll start seeing an alternative.
I've been told that alignment and corruption are supposed to be different things, but I have a hard time seeing any real difference in the mechanics of the game thus far.