Lost ruins of Arnak - The Missing Expedition The professor is missing Follow the trail of your dear friend, Professor Kutil, who has gone missing while exploring the Lost Ruins of Arnak The Missing Expeditions challenging six-chapter story campaign can be enjoyed as either a solo or co-op experience for two players. It includes new story scenario content, helpful carrier pigeons for passing resources between co-op players, and an all new meta game system that lets you unlock story elements and useful perks based-on the choices you make on encounter cards in each scenario. Of course, thats not all youll find in this expansion. New Leaders and More The Missing Expedition includes two new leaders, as well The Journalist has a passion for documenting the unexplored and a keen eye for capturing details that might otherwise elude others. The Mechanic is a versatile tinkerer whose skill to repair even the most broken things makes life easier on any expedition. Both have unique styles of play that open up new possibilities, and can be mixed and matched with any of the previous expedition leaders characters for play in solo, co-op, or regular multiplayer games.