Nice atmosphere
I thought this was a fairly well made submission. I think you managed to create a very good, eerie, dark, mysterious atmosphere in this game. The music you choose helped to establish that, but the best thing was the lighting in my opinion. I really liked the dynamics shadows and the role light played in advancing through the game.
I do wish the character would move a little bit faster through the dungeons though, because you had to do a lot of backtracking and finding your way through mazes. That can become a pain in the ass if your character moves so slow. I understand you want to slow down the gameplay, but a bit more speed would be nice nonetheless.
Furthermore I agree that it was difficult to steer the butterflies in the right direction, but once you figure out what to do it works alright. I thought the butterflies were an interesting puzzle element.
Overall 8 out of 10, 4 out of 5. I think you have managed to implement your ideas into this game pretty well. There's still some room for improvement, but all in all I think this was well made.
~Auz