Tank slayer
Not unlocked yetDestroy 500 tanks
Warrior of the Sky
Not unlocked yetDestroy 200 aircrafts
Demolisher
Not unlocked yetDestroy 200 buildings
Exterminator
Not unlocked yetDestroy 200 cannons
Beginning
Not unlocked yetComplete the first mission
Through a minefield
Not unlocked yetComplete the fourth mission
Just do it
Not unlocked yetStart the level anew 5 times
Halfway
Not unlocked yetHalfway through the game
Air mechanic
Not unlocked yetUpgrade the aircraft to maximum
Triumph
Not unlocked yetComplete the whole game
On the new wings
Not unlocked yetBuy a new aircraft
Bomber
Not unlocked yetBlow up the building
Best in the sky
Not unlocked yetBuy the best aircraft
First step
Not unlocked yetPass the first era
Continuation
Not unlocked yetPass the second era
On the way to victory
Not unlocked yetGo through the third era
Winner
Not unlocked yetGo through the fourth era
Rich
Not unlocked yetAccumulate 5000 finances
Firework
Not unlocked yetDrop the superheavy bomb