Edited to explain that English is a language I'm learning, sooo... Warning of possibly bad English!
(Opinion + Spoiler)
The game takes a rather different approach.
The way he focuses on accumulating points until he reaches the end and having a kind of personality test is really cool! :D
I was very happy to see that he won a special ending for defeating everyone and never running away (Although I don't like inanimate, so I'd rather have become the dragon's pet than a statue of him XD) in addition to testing new things to catch others endings are pretty cool!
Oh, I don't know if anyone has scored this, but I thought it was cool how balanced the game was... I know it's weird praising this in a game with the focus kind of just on TF, but I thought it was cool to comment, since I REALLY liked that part RPG
However... The only problem for me is that the game is kind of fast towards the end, getting your transformation and having your mind erased (Mind erased, Which I don't like either, but that's purely my opinion, obviously) has a mini scene and it's over.
It would be nice to be able to walk around the new house a little bit, maybe fight the cutscene fight like the monster you've become and... Maybe not already be controlled, but change your mind during the fight like "Wow... That's good. .."
And my favorite ending was the ghost, but not turning the ghost, but the cerberus, since it is the only transformation that obedience to the owner comes from other means than brainwashing >.>
In general, a game that surprised me a lot, I would say 8/10 since its proposal was well achieved :3