During the hectic retreat towards Dunkirk and the evacuation after Germany's advances, a column of British Expeditionary Force soldiers are bombed by the Luftwaffe.
Operation Ultimatum is a short, free scenario meant to be played in one session. The story is straightforward and contained, with challenges that introduce new rules as you go so people can learn how to play Achtung! Cthulhu. It requires the core books or at least the (also free) quickstart to play, but it also comes with four pre-generated characters if you want more options.
A Section M researcher and their trove of valuable notes, books, and artifacts has gone missing. Your team is sent in to recover the professor and his posessions, and you come up against bizarre resistance! This adventure was released for free for the Achtung! Cthulhu one-year anniversary and was played as a convention scenario at Dragonmeet 2022!
Watch it played on CyberNation Uncensored, as run by Modiphius writer Ben Maunder!