I don't think the Pushy Protestant quest ever marked the first objective for me. Could turn it in just fine, which marked the second objective and completed it (which also counted for the three quests for the Guild Ring).
After beating the cult, the head priest said the same line as before, and no one else could be talked to. Not sure if that's intended or not.
Anyway, I had fun with the content that's there. Probably not going to play more until there's more content, though. I like the action point based combat system. Not too fond of the dark areas, and some of the portrait art sticks out with a different style (though I assume that's temporary).
Good luck with the game!