Which faction in Shades of Darkness did you like the most?

So, VDV_forever, are you suggesting playing all 36 scenarios? It might be difficult for the organizer, but as for the single-player campaign, you could, for example, find save files online or entrust the playthrough to someone else, and then use those to create starting save files. Alternatively, you could break down the campaign into parts and adapt it for an official tournament. In any case, the final decision rests with the organizer.