Nicely done on your first game! I personally didn't mind the difficulty as once you start grinding notice yourself getting stronger after death it feels much more balanced. It was a nice moment of realization when I noticed my attacks doing more damage. I enjoyed the story set up and twist too.
Game has got some nice potential, I think it just needs is more content. Things like other spells maybe? I also enjoyed the boss fight, although maybe some other attack patterns would make it feel more challenging.
Overall, great work, I enjoyed playing.