I went into the outskirts to help my son, who hasn't played very long. While we were in the vigilante camp, I spoke to Phineas and turned in the Fake Elf Scalps, but he wouldn't respond to my son's character. In frustration, he attacked Phineas. I was able to kill off the camp, and got the Manifesto, however this bugged out my tasks. I not have Seek Alberic (which never went away when I found him) and Vigilante Inquisitor (I have the Vigilante Plans Stage 1 in my inventory, but Alberic won't respond to turn them in), in addition to Venomous Extraction for the next step on the actual path, and Evidence, which seems like the end to the path. Seems like the Manifesto should only drop once you get to a certain part of the path, or it causes all kinds of kookyness to the tasks.