I liked it a lot, it had a nice feeling of tension to it. The monster chasing you was scary if you dont see it coming (for me at least), as the first orbs were in the open areas and you could just see it coming right at you.
I found it much scarier when I couldnt see it coming in the maze and then it came and killed me. A few times. The maze is hard to get past as once the monster is in there with you, you're basically doomed as you can only outrun it if you had a clear path.
I would give the monster a kind of eery sound effect that got louder when nearer to you so you know or possible adding fog to hide the monster until it is a certain distance away from you, that way, you would always be on edge. also some sort of indicator or subtle sound to know you picked up an orb would be a nice touch I think.
Overall fun game, I enjoyed playing it, and i think it has that nice Indie horror look to it. Great Job!