Celtic Heroes

I have a bounty quest. It says kill the hawkburts gang in the murky vaults and the map shows me this, ive been killing mobs in the room where im at but nothing happens. Plus the mobs i need to kill is somewhat no spawning, what is this? Can someone please explain it? Im from mabon server btw

In the center of the map, at the “!”, is a leystone. Go directly right from there through the waterfall. There are the hidden rooms

If you look closely at the map area where the crossed sword icons are, there are faint room and path outlines, very lightly colored, but they stand out slightly. If you start by looking at the central room by the leystone and move to the right (while looking at the map) you can start to see the rooms and paths.