Riverguard Keep (A4) | Ritual of Purification Neverwinter Nights 2 Guide

On the first level at (1) you'll meet a bugbear leader Ralidur. Tell him that you'll kill Ghellu for him and you won't have to fight him now. Go for the second level (2).

In one of the rooms (1) you'll see a man named Ribsmasher. Free him and he'll help you to defeat all the enemies here. At (2) defeat the enemy leader and take a shield that he was holding. Proceed to the lower level (3).

Monsters around here won't attack you, so just go to their leader, an ogre named Ghellu. You can now choose to fulfill the promise you made to Uthanack and Ralidur, or agree to kill them both for Ghellu. It's obviously quicker to just whack the ogre now. Take its head with you when you do so.

Nearby you'll see a door that leads to the statue room. In order to open it you have to gather the whole set of dungeon master's equipment (Ghellu has the scepter and Ralidur hold the blade, the shield should already be in your possessions). The other way to get past it is to let Ribsmasher kill himself while trying (you'll get some evil alignment points and loose influence with Shandra). Also, you can just take the damage it deals and open it for yourself. Either way you do it, activate the statue and leave using the shortcut nearby. Ralidur is waiting for you outside - give him Ghellu's head and you'll avoid fighting with his unit. You can also pay a visit to Uthanack now to tell him about the events that have come to pass.