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