Okay, just to note that I made some of the assets for this game but I had no involvement in development.
So I personally think that the theme was nailed. Cosmic horror is often misinterpreted. This game gets it right, beyond understanding and beyond comprehension.
The layouts of the areas are well done and thought out.
The character interactions feel natural and not forced.
The Theme is a nice mix between cosmic horror and spiritualism and very well mixed.
I like the ambiguous endings that allow you to come up with your own interpretations with no true explenation to them (again perfect cosmic horror)
The art work and interfaces mesh perfectly and really feel nice to interact with.
The fights feel well balanced and could be called casually difficult, not too hard or too easy.
The Secret "mini boss" fight was an awesome reference.
With more time put into it I could see an amazing game coming from this and for only 1 months work I have no complaints on the quality of this game, it's short but it's better in quality than many other maker games that have had much more time put into them.