Here is the full list of all 29 Red Wings: Aces of the Sky achievements.
Unlock every skin possible
Complete Survival Hard with Airco Legendary Skin
Collect 150 stars for the skill book in co-op mode
Collect 100 stars for the skill book in co-op mode
Collect 150 stars for the skill book in single player mode
Achieve score higher than 4 950 000 in Survival Hard
Complete Triple Alliance campaign in co-op mode
Watch all cutscenes without skipping
Kill 100 enemies with a barrel roll
Destroy 10 observation balloons using squadron ability
Complete Entente campaign in co-op mode
Collect 50 stars for the skill book in co-op mode
Achieve score higher than 1 244 500 in Survival Medium
Achieve score higher than 647 800 in Survival Easy
Achieve a combo of 66 kills
Complete Triple Alliance campaign in single player mode
Assign all dogfight perks
Complete Entente campaign in single player mode
Heal yourself 100 times
Destroy 50 enemies with Flying Dutchman skin
Collect 100 stars for the skill book in single player mode
Collect 50 stars for the skill book in single player mode
Unlock all skins for a single warplane
Play the game with any unlocked warplane skin selected
Watch the credits screen without skipping
Die during tutorial
Destroy 5 aces with barrel roll
Achieve a combo of 7 kills
Complete tutorial