The only thing negative about it is the fact that the combat system is completely unnecessary due to the fact that there is no goal killing ennemies, they aren't such a threat, are easily avoidable and not kiling them has no consequences what so ever. Anyway except that, the idea of changing from a world to another is very cool. Gave me some Soul Reaver Vibe, (but the transition effect in your game makes it even cooler) I wonder how you did it. And the giant tower watching you like a Sauron tower is a good way to make you feel (Watched by an omnipresent entity), the end is a bit abrupt but if it's to make it look like a cursed game corrupted by the "eye entity" then it's working . Anyway, well done