Complete the ring event at the pool down the back stairs of central pyramid( 0, 44, -214 ) /waypoint 0.00, 44.00, -214.00 by killing successive waves of monster starting with the swirling ooze (46^^^ Heroic) and ending with The Acidic Mass (49^^^ Heroic). Once killed, it takes an hour to respawn the ooze to restart the ring event.
You MUST have the 4 clay hearts before you start this step!
Make your way up the passage to the top room. As you kill Mobs on each landing there will be a group of 3 or 4 come running down to investigate and attack. Do not advance to the next landing until they come down. This will happen on each landing. Be carful at the top landing there is named just out of sight. You will know you are at the top when the investigating mobs will not run down. Also, the ramps turn up to the right until the last one which turns to the left.
Once the named is killed, you will be at the bottom of an arena with stairs leading up to a large landing area. The are many lizardmen groups and wanderers that need to be cleared to get at the idols in the next step.
After all four hearts are placed, Fright will spawn on top of the central altar, along with four friends in two groups of two. After the front group is killed, it seems to automatically respawn making it virtually impossible to solo this step. It is possible to solo if you have a pet class, as you can have the pet pull Fright off the platform, and none of the 4 respawning mobs will chase, as they have a pretty low aggro radius.
Kill Fright to complete the quest. Fright has a long duration stifle/stun/dazzle.