Your game looks and sounds awesome! On a plus side it works great on mobile also.
As others mentioned, even with hints in info, I didn't manage to get all masks correctly. Maybe you can allow multiple masks to be accepted by the soul of they made sense, and have different story based on the selected mask. In the end, you can even get some insights about the players perspective about all presented souls and see if they are optimistic, pessimistic, empathic, good, evil, etc... and maybe the game could present one mask to the player as a gift for finishing based on the choices made.
Anyway, great game, I love it :)