The torch battery ran out very quickly and it was completely black in the cave after the part where I read the map. There should be some kind of access to more light sources or batteries or something. I couldn't work out what as going on without any light. I turned up the brightness on my screen to max in a darkened room and still couldn't see. It would be easier to navigate even somewhat if being close to walls made them visible but I couldn't tell if where I was going or what direction or if I was actually running into walls at points. I hope this is useful feedback. I just couldn't work out what was going on. It would be a huge step up if even in complete darkness there would be some type of visibility or method of being able to continue to navigate, rather than just having to press keys in the hopes of getting somewhere.