Just finished playing the Steam demo, awesome work!
To start, the atmosphere is amazing. The story and general environments are very convincing and playing as a woman believed to be a witch is very unique. I loved the weapon arsenal and the mana abilities, they all feel well-balanced and "juicy" enough in mechanics, animation, and sound design. It did take me some time to get used to the alt-fires but once I did everything went great.
A few small flaws (blemishes really, nothing major) were the music felt a bit repetitive at times. Listening to the same song for 45 minutes was a bit tiring but the crossfade of the electric guitar helped a lot, so kudos for that. Also, really minor but native ultrawide resolution (2560x1080) doesn't work properly, so I'd advise either disabling it completely or adjusting your UI canvases to scale accordingly.
Keep up the good work, can't wait for the full release!