Simple yet super fun! I really like the sacrificial element in this game - I felt like it really forced me to have to really take in my surroundings and properly learn the map so I could move around as much as possible without needing to rely on my finite light resource (for example near the end memorising the final path and performing it blind due to nearly being out of light!).
Perhaps this would have made the sections in the dark too easy but I wonder if it would be nice to have added "bump" sound effects when hitting walls in order to 'stumble' your way through the dark and have a better sense of where you are and if you're pathing correctly when you're unable to see.
Good job on this one!