I was impressed by the sheer amount of stuff I could combine, and how easy and intuitive it was to craft. While the game didn't test my knowledge of the alchemy system super hard, it seems like it would be fun in a roguelike/randomized setting where you have to manage your resources and craft just with what you're given. I also think the idea of having to stay within shadows is a fun mechanic, especially because the timer ticks down in a way that seems you're going to make it.
Good mechanics, and I'd love to see it expanded on further!