Skeleton Crew
Ultra rare0.9%ObjectiveOptional
Complete a mission and land at the airbase with 2 or fewer crew members surviving
Puit your crew naked (or clothing with minimal armour), and make your plane as tough as possible. Except the pilot and one other (navigator!). Or, put 5 people out on the wing with no parachute and do an emergency dive... Good luck... NB to avoid messing up your campaign progress, do this at the beginning of the campaign (first mission), or back up your saves first (C:\Users\%Username\AppData\LocalLow\Runner Duck\Bomber Crew)