Repair an engine mid-flight
Take a photo of an intel site
Destroy an enemy target
Complete the first mission
Fly 10 missions
Return to the airbase having successfully completed a mission
Sink 5 Submarines
Complete the final mission
Defeat all Enemy Aces (in one campaign)
Defeat 4 Enemy Aces (in one campaign)
Defeat an Enemy Ace
Encounter an Enemy Ace
Fly 40 missions
Fly 25 missions
Fully level up a crew member in two skills
Bail out your entire crew
Fully level up a crew member
Destroy a target using the Grand Slam bomb
Use 'focus' on all 4 gunner stations at once
Shoot down a V1 Rocket
Complete a mission and land at the airbase with 2 or fewer crew members surviving
Complete a mission and land at the airbase with less than 5% fuel remaining
Have one of your crew survive 30 missions
Complete 7 missions with the same 7 crew surviving
Land at the airbase with only one working engine
Destroy 200 enemy targets
Destroy 250 enemy fighters
Destroy 20 enemy targets
Destroy 50 enemy fighters
Complete a successful mission with all 7 crew surviving