Okay, credit for the good idea with this one and the wonderfully retro sfx, however I'm afraid there were two major issues for me. 

The first, was the very choppy sound quality, which meant I was not sure how much I turned towards or away from a node or from the beast, meaning that finding the nodes meant spamming the beacon and turning, since it was not necessarily easy to know when a node was in front of, or behind me, or when it was left or right, how much to the left or right it was. 

Btw, I am using google chrome for the browser, if that makes a different to the way sounds are played.

the second, is why on earth isn't there a sound for when you walk into a wall? Really the game is far harder than it needs to be, and somewhat frustrating I might add, since I just could not get an idea of the level layouts with the beacon alone, thus could not know where the beast was, or beacons were or the best way to avoid it. Indeed, this is I think perhaps why sonar tends to be used less in first person audiogames than other methods of navigation. 

A snap to 90 degree direction command would be nice too, though might make the game too easy.

All in all though, nice idea, and particularly love those retro sfx, and running away from the beasty, indeed if a wall bump sound was added I could see this one being fun.

Btw, for more on audiogames, please visit www.audiogames.net.

This is a neat game but it just wasn't jiving with me. The panning of the sounds was a bit confusing for me (no difference between in front and behind is a bit annoying), and not being able to tell when I was walking as opposed to bumping into a wall was confusing as well. The sonar helps, but still leaves me unsure at times where to go. The monsters are also quite hard for me to predict and dodge. Because of this, I found myself madly running around a lot, and wasn't really able to finish the game.

The sounds are interesting. Some are very harsh and gave me a bit of a headache, though the pings for the sonar and finding the nodes fit really well. The footsteps and the node hum though don't fit that well for me.

My suggestions would be to change the sound of the node hum to something a little less harsh, and perhaps having an audible indicator for when you bumped into a wall.

Nicely done.  The stereo sound for finding nodes was great.  There was no instruction that you had to find that last sound to exit. Or maybe there was and I missed it.