Go to Peregrine Island and clear out the Rikti
Portal Corporation's been having a big problem maintaining safety for the lab on Peregrine Island. One of the worst offenders is the Rikti. They seem determined to steal our technology, destroy it, or possibly both! I'd like you to head over to Peregrine Island and clear the Rikti out.
The Rikti have never seen any technology they didn't want to control. be wary of them, Red Tomax. If I were you, I'd start my search in Nelson Borough or Curry Cove.
Defeat X @ Peregrine Island (Rikti)
Mission Complete: You have discouraged the Rikti from attacking Portal Corporation.
The security officers over at Portal Corporation are reporting a significant decrease in Rikti activity. Apparently, you really showed them what's what.