A Little Help

Overview
Summary
 * 1) Seek Renk in Riven Earth and recruit him for the project.
 * 2) Meet Renk at his laboratory in Alcazia Tangle once you've recruited Gadd and Oola.
 * 3) Eliminate the Destroyers.
 * 4) Speak to Renk.
 * 5) Talk to Mamp in Rata Sum regarding the G.O.L.E.M. project.

Obtained from
 * Plaxx in Vlox's Falls

Reward
 * 2,000 XP
 * 250 Asura reputation points

Dialogue
 * "We need Renk for the G.O.L.E.M. project. He's bright... intelligent, even. Lately, he's been hanging around Riven Earth researching the flow patterns of mountain waterfalls. Apparently he sees patterns in things where others just see chaos. It seems odd, I know, but you never know what these geniuses will find interesting. Find him and bring him aboard. I'm sure he'll want to help us."

Walkthrough
Find Renk in the far east end of Riven Earth just south of the entrance from Arbor Bay

Start in Rata Sum and head south through the Magus Stones. You should not encounter many enemies beyond spiders and weavers. Enter the Alcazia Tangle from there, and continue heading south. You can make it to the entrance to Renk's lab without encountering any enemies at all, if you are good at maneuvering.

The next part takes some careful maneuvering as well. Renk will be surrounded by some Destroyers, and if you move close to them and Renk, you will say something along the lines of "Renk, hang in there!". Once this happens, the Destroyers will move in and attack Renk. If you aggro the Destroyers without your character calling out to Renk, they should only attack you, allowing you to kill the Destroyers and then talk to Renk. If Renk dies, after you kill the Destroyers he will be resurrected if you are close enough to him and you can still talk to him, so do not give up when Renk dies, just keep close to his corpse.