i will try to help you. i think that you are in the last secret of feeco depot.now this is in FDP02C08. find the hidden ledge to the left of the area go to the bottom and avoid the greeters then jump in the well. you should hve been in the secret by now .just as the slig reaches his right most pointenter the door and sneak behind him.climb to the ledge.dont make the slig shoot sneak to the left.when both sligs turn hop to hang in the shadowsthen drop whenthe bottom slig is turnednow sneak behind him to the left and when both are turned pull the ring to drop the slig.you drop to so stand very still.sneak up to the upper path and posses the Sligstake the survivor and pull the leverthen take him through the drill to the right. carefully shoot the Slig and deposses or destroy the slig in the sawin C24. come get the mudokons take them through the saw in C24 one at a time then free them.
I hope this helps you.
