The sonar didn't work for me, but the sounds are nice and the screenshot for the cave map looks very good.
We didn't clarify it anywhere but you need to hold LMB for the sonar to work (hope that it can solve your problem), thanks for the feedback!
Ok, I replayed the game, and it changed everything for me. This implementation of the sonar idea is simply amazing. I think you could do a lot with this as the main feature of a game! Nice work!
