I seem to have a problem finishing this game. I've been slowly picking away at it for about a year (real world dilemas can make game progress go slower than molasses up a hill in January) and finally reached a place that I can't seem to get past.  I don't know what to do to get that charm after 1: killing the evil priests (4), 2: hitting the switch up the ramp that sends down the water and unleashes 4 nasty fishmen 3: sounding the gong to link w/ the big thing in the middle of the room to temporarily posess one of the fishmen bodies enabling you to jump and hit the four switches (for more water flow) recessed higher in the wall.  Now what??

water conducts electricity, so you have to shock the water, and that kills Hydra.

I forget if you have to use the electric gun or if there is another way though...

Thanks for the advice.  I will give it a try and let you know how it goes (at work right now).