Ram the enemy
Boil the engine
Shoot down your first foe
Finish a mission without sustaining any damage
Finish a mission in a Realistic Mode
Finish the first week
Do a 360 degree jum on bicycle
Read the Zumbach's prologue
Finish the fifth week
Finish the third week
Gather 13 bottles of Whisky
Shoot down 5 enemies during one sortie
Shoot down the enemy craft with that one last bullet
Achieve a 10km total distance of running at Station
Ring your bicycle bell at 10 people
Shoot down the enemy plane while flying head-on
Finish the game
Shoot down a retreating enemy aircraft
Finish the game without visiting the Mechanic (except tutorial)
Shoot down the enemy craft with disabled engine
Keep cycling with the running soldiers
Use the Mechanic Mode 20 times
Pay your respects to the Flag
Keep on running with the soldiers
Have every conversation possible
Shoot down 8 enemy planes without reloading
Finish a custom mission in a Spitfire
Read all the scribblings scattered throughout RAF Northolt
Protect Major Kellet during "The Baptism of Fire"
Shoot down all bombers by yourself in any mission
Finish eachmission on the highest difficulty settings
Shoot down the enemy plane while diving sharply
Shoot down 20 of each enemy plane type
Finish each mission in Realistic Mode
Finish each mission with a highest score
Reach the max possible altitude
Pay your respects to the King
Shoot down the enmy in Tutorial
Pick 100 mushrooms
Shoot down the enemy plane while climbing steeply
Unlock the Spitfire
Achieve a 50km total distance of bicycle rides
Shoot down 100 enemy planes
Shoot down 25 enemy planes with KillCam
Shoot down the spy plane in "Good Morning, General!"
Eat a carrot
Finish the fourth week
Finish the second week
Get top score at 75m target
Beat 4 seconds in a shooting range challenge
Master your shooting range skills