Your game looks really good! You used the assets well, and the lighting and post processing make the game look even better! I almost thought this was made in Unreal for a second! XD I'd say the runes are definitely a little tricky to find though! Do they get randomly generated in new locations? If so, that's awesome! I would suggest adding a bigger particle effect around them, or giving the player more time to look! I was also wondering about the little animals you meet along the way when you're exploring! If possible, I think having them lead the player to the closest rune might be a nice touch! Overall a fun experience though! Great game!