Pretty creative game with some nice mechanics in it. The ghost weapon feels smooth but also a bit frustrating sometimes with how slow it moves and lags behind.
The art is nice, as far as I can tell, but I'm sorry to say the lighting is not as good tbh. The scene looks too dark and you have to stumble your way through a lot. On top of the lack of tutorials, I was quite confused in the first few minutes of the game, not even sure where my character is or what they supposed to be even. The mace/spear weapon have a bit of a glow to it but the key was so small and dim that I totally miss it and stumbled around for quite a while. The decision to include a ghost form timer is also a bit peculiar to me, Especially considering the fact that this game requires the player to explore quite a bit, so having a hard reset timer on top of that, I feel like it's not very conducive to the gameplay.
I think there's some important sound effects I would have loved to see included, for example a form switching sounds, since it's the one core ability in the game.
Overall I would say not too bad of a concept, but would love to see a lot of improvements still :)