Hello Welded Bones, I played your game on Sunday. I took my time learning it and unlocked all upgrades in about 40 minutes.
I played on a keyboard with arrow keys and Z and X, which work, but are not in your controls image, so I thought I would mention the I guess engine default keys still work.
I don't know if it was intentional, or the build I downloaded was with a save, but I started the game with many artifacts ready for polishing. It filled up coloured board, except for one slot, which I was not able to find throughout my gameplay.
The "how to play" section of the menu didn't do anything, but I think your tutorial was enough. I just thought there would be more.
I found 2 relics, but I don't think there is anywhere you can see them.
My level was in single digits, and I could kill enemies in double digits, but sometimes there was an orc of that same level that could kill me. The "Sacrifice" button was getting rid of enemies, but I did not see my health going down.
It's relatively simple game, with a solid game loop, so I found myself quickly doing one run after another.