Your art work is very nice. The sprites read well and work well together for a unified theme. I like the idea of your health and all tools being tied together on a single meter. I did find the flashlight to be a little weak or useless. The minimap would be useful if it had an indication of where the player was on the map. Without that, you end up wandering around in the dark, and that is more frustrating than fun. I also found that the doublejump, which is critical to proceed, only worked some of the time. I'm not sure if that's a bug or a feature, but I suspect it is a bug.
I like how the enemies spawning in has a bark. It helps lend credence to the feeling of being lost in a dark cave.
Overall, well done!