Hello there, Thank you very much for reaching out to us. I'm sorry to hear that you are having issues with the pikers not spawning in this particular area. We've received reports of this issue and are investigating the underlying issue further. For any updates on this issue, we recommend viewing our [url=http://www.x.com/Destiny2Team]X/Twitter page[/url] and our Patch Notes as they become available, posted on the [url=https://www.bungie.net/7/en/News]News page[/url]. In the meantime, we've received a workaround that has helped some players. When running this mission, we recommend trying to wait until the objective updates to "Defeat Piker Crew" before killing any of the Dregs or crouching through the tunnel.