Hi! I played through the latest demo and here are some of my thoughts:
1. At the very start I didn't find a way to speed up/dismiss the tutorial dialogues. Only later in the game I found out it was "P". On the other hand, some dialogues (the ones that appear at the bottom) can be dismissed by the "ESC" key.
2. In my opinion the game would benefit greatly from having a mouse support. And I am not only talking about the inventory/skills UI, but combat as well. I wanted to use the mouse for attacks all the time, and "E" for interaction.
3. I am not sure whether I missed it, but is there a visual indicator of how many healing potions I have left?
4. The fact that attacks use my stamina was slightly annoying, as I did not had the possibility to execute some combos. I guess I played too much Children of Morta...! ;)
5. Enemies look good and telegraph their attacks nicely - well done!
6. I am not sure where the crystals were coming from. At one stage, the demon gave me some? Were there related to XP points?
7. The auto-gathering range for the xp orbs could be bigger.
8. I did not find the stone that the game was asking me for. I thought it was the big portal thing, but it turns out that's not it, I think.
9. The plane-shifting mechanism is a nice thing! I hope that you will expand it. Right now it is useful for ignoring some obstacles and killing enemies in the different plane. Is there a benefit of killing these enemies?
10. The skills ui was not giving me clear information on which of the skills I could unlock. They all seemed grayed out for me.
Overall, the game gave me a very relaxing vibe; reminded me of Ada (https://hazygd.itch.io/ada), but this one is more polished. Also, the music and sound were very nice!
Good job! And thanks for sharing a demo!