I started out with the Portoguese (Portoguese) 1 course and didn’t see any missions. Neither did I see those missions in the second course. So I tried the Portuguese (Brazilian) course 2 and 3. Eventhough I reached level 4 in both of them nothing happened. Maybe this is because my language was set to German. I tried to set it to English (UK) after that and started new courses, also for other languages like spanish or italian but I never saw a First Contact mission.
Hi, the chatbot and grammer lessons is not available for the official Memrise Portuguese course.