This is simply my opinion:
Theme: I don't see how this game is related to discovery and exploration since you don't really explore, you just follow the arrow to the direction of the item. If just the arrow had had been deleted I would have gave it 5 stars. But I sadly can't give it more than 2 stars.
Fun: The game was fun to play, I would find myself playing and enjoying this often. However it really comes to be kind of doing the same thing as the level design doesn't change through levels. Therefore 4 stars.
Graphics: The artwork was polished and everything was very promising. I have not a single thing to complain about. Although I will ignore the fact some animations are missing, maybe that adds to the charm. 5 stars.
Audio: At first it was nice and I thought, this deserves 5 stars. However after playing it over and over it becomes irritating to the point I don't find pleasure but pain on hearing the soundtrack. No complains from me about SFX, nice work on that area. 2 stars.
Originality: This is a combination of a lot of concepts and it makes it unique. Like this really is not what you see very often but you know everything isn't new. Overall 4 stars.