Overall game design is very good. I found myself constantly going, "Wait, where does THAT lead to, what's over THERE?" and running around and backtracking a lot, which is exactly what you want in a Metroidvania. It never got old or felt too tedious to me. Visually it looks good too, loved the backgrounds especially!
Also really liked the music, but sometimes it would clip/become distorted, and I don't think it was due to my speakers. I think the music may have been exported at too high a volume.
As much as I enjoyed exploring, I think the combat mechanics could use some tweaking. The sword strike doesn't seem to work, and the animation is a bit long for a standard melee attack. I found myself using the bow all the time and thankfully the enemies never charged at me, so that made it much easier. Maybe a little TOO easy haha.
Finally, I did find one game-breaking bug: I tried rolling through a narrow lower passage but lifted the button too soon before getting to the end of that tunnel, and my poor elf man got stuck in a perpetual falling animation.
This has some potential though; curious to see how it evolves!