Hello,
Honestly, this is an awesome polished game to play with such a well thought design, really loved playing it. The game progression was quite good and the enemies' segregation is well made, this ensures that the player moves forward always and finds new things as he goes, good job! A quick suggestion, you can try changing the environment slowly as the game progresses as that's the only thing that seems to be missing as a journey, however, a quick suggestion here would be polishing the camera a bit more, like for example, while the player is moving towards right the camera would be showing you more things towards right instead of staying at the player center and same for the other side too. All other things like camera shake are quite good and give good user feedback. One other thing that needs to be taken care of is the normal attack currently has unlimited spells, which might be okay for difficulty but that don't make any sense in general, so consider tweaking that in. Apart from all this a good polished game indeed!