Complete the first mission

Sink 5 Submarines

Repair an engine mid-flight

Return to the airbase having successfully completed a mission

Destroy an enemy target

Complete a successful mission with the full crew surviving

Take a photo of an intel site

Bail out your entire crew

Destroy 50 enemy fighters

Destroy 20 enemy targets

Destroy 250 enemy fighters

Destroy 200 enemy targets

Land at the airbase with only one working engine

Complete 7 missions with the same full crew surviving

Have one of your crew survive 30 missions

Complete a mission and land at the airbase with less than 5% fuel remaining

Complete a mission and land at the airbase with 2 or fewer crew members surviving

Shoot down a V1 Rocket

Use 'focus' on all 4 gunner stations at once (Main Campaign)

Destroy a target using the Grand Slam bomb

Fully level up a crew member

Fully level up a crew member in two skills

Fly 10 missions

Fly 25 missions

Fly 40 missions

Encounter an Enemy Ace

Defeat an Enemy Ace

Defeat 4 Enemy Aces (in one campaign)

Defeat all Enemy Aces (in one campaign)