Okay, what a game. I always know when I see a Psionic game that it'll be an experience, and this game did not disappoint. Great atmosphere, great sound effects, even a great use of voice work in the tape recordings to amp up the tension. I liked those points when the camera movement would abruptly slow down to just create these tense, suspenseful momenst.
The one thing that took me out was the buildup to the ending. Not so much the ending itself, but somewhere after you've collected all of the notes and read all of the book messages, and you have these orbs and crystals and you're about to head down to the basement. Somewhere around there I knew, beyond a shadow of a doubt, "Oh, I'm going to release the Relentless." It wasn't even a mystery at that point, it was simply obvious that if I finished the game, I would release/become the Relentless. The ceremony had never been to destroy the Relentless, but to bring it into our world.
I was wandering around, looking for the last crystal, and thinking, "This Relentless clearly isn't doing anything to drive me mad or control me, I'm walking around clear and sane as anything, and it isn't doing a darn thing to stop me from looking for the crystals that supposedly will banish it from our world. Yeah, I'm obviously already its pawn." The only thing the Relentless (or more correctly, the game mechanics) did was prevent me from just walking out of the house and foiling its plans that way. So from that point, the game was very much on rails, forcing me to do what I knew was the wrong thing to do (or just not finish the game, and where's the fun in that). It might have been better if there was some sense of the Relentless trying to prevent me from collecting the orbs and crystals, some threat that could kill or possess the character, so that I actually felt like the ritual was the only solution. As it was, once I got to that point, I just felt defeated, because I knew the only way to finish the game was the "bad" ending. Even freeing all of the trapped spirits didn't help.
So now I feel a little guilty, because there were a lot more words of criticism in this review than positive words, and that truly doesn't reflect my opinion of the game. It was a great game, and I will continue to look for Psionic games with anticipation, because they're awesome. Keep up the great work, especially now that you have the Unity engine at your disposal. I hope this review serves as something constructive for future endeavours. Looking forward to the next game.