The game is short. I am three hours in it and at the next to last boss.
As for being repetive - the puzzles are, even if they are easy....You can throw holy water on your attacker to slow them down and at the boss battle you can actually fight back. Other than that, it is all about tryin\' to maintain your characters sanity.
And yes they can make it hard. I spent awhile on one level, just because my attacker was non-stop. I would go everywhere..hide abit..come back out..walk around and boom, he would appear. It was intense, that\'s for sure.